Paul Townend will be on board I Am Maximus and Mark Walsh has opted to partner Limerick Lace after owner JP McManus finalised riding plans for his five-strong team in Saturday’s Randox Grand National.

The celebrated owner has enjoyed two famous victories in the world’s greatest steeplechase, memorably providing AP McCoy with an elusive first success aboard Don’t Push It in 2010 before the historic triumph of the Rachael Blackmore-ridden Minella Times three years ago.

McManus is set to be well represented once more at Aintree this weekend, with Irish Grand National hero I Am Maximus and his Willie Mullins-trained stablemate Meetingofthewaters his two shortest-priced runners.

William Hill on Tuesday suggested the latter, third in the Ultima at the Cheltenham Festival last month, could even go off favourite following a “massive gamble”, but with Townend in the saddle on I Am Maximus, the owner’s retained rider in Ireland, Mark Walsh, has interestingly sided with Gavin Cromwell’s Mares’ Chase heroine Limerick Lace.

Confirming riding arrangements, McManus’ racing manager Frank Berry said: “Paul is on I Am Maximus, Mark is on Limerick Lace and Danny (Mullins) is on Meetingofthewaters.

“Mark has never ridden I Am Maximus, so Paul will ride him. Mark had a difficult decision to make as he liked Meetingofthewaters at Cheltenham as well. It was a difficult decision, but he’s gone with the mare anyway, so he’s hoping she’ll get the trip.”

Berry said Keith Donoghue had been booked to ride Cotswold Chase winner Capodanno, while Jody McGarvey will do the steering on Janidil.

He added: “They’re all going there in good form, they’ll need a bit of luck in running on the day in the National as everyone knows, but hopefully they’ll give a good account.”

Hills make last year’s winner Corach Rambler their 9-2 favourite, with I Am Maximus 7-1 and Meetingofthewaters only a point behind at 8-1 after being cut from 10s.

Spokesperson Lee Phelps said: “The money started coming in for Meetingofthewaters last week and it has not stopped. Make no mistake, this is a massive gamble, and we’ve been forced to take more preventative action, cutting Willie Mullins’ runner to 8-1 from 10-1, having been as big as 14-1 less than a week ago.

“Most people would have expected last year’s winner Corach Rambler to go off favourite, but if this gamble continues at its current rate we think there’s a good chance Meetingofthewaters could be favourite come Saturday race-time.”

The well-fancied Kitty’s Light, a 14-1 shot with the same firm, appears almost certain to make the cut after Gordon Elliott revealed top-weight Conflated will instead run in the Melling Chase on Friday.

Conflated was one of 13 Elliott-trained horses still in contention for the event following the confirmation stage on Monday, but owners Gigginstown House Stud later said the prospect of running under 11st 12lb on testing ground over four and a quarter miles was a major concern.

The 10-year-old was also entered for Thursday’s Aintree Bowl over three miles and a furlong, but was not declared on Tuesday morning and is instead set to run over two and a half miles the following day.

“We had the option of the Aintree Bowl and the Grand National, but with the ground going the way it is we are going to run in the Melling Chase on Friday instead,” Elliott said in a stable tour for Attheraces.com.

“I thought he ran great in the Ryanair Chase (at Cheltenham, finished third), he hit the line well and I was very happy with his run.”

Conflated’s anticipated defection means all six horses with an allotted weight of 10st 6lb are now set to get into the final field of 34.

As Glengouly, Galia Des Liteaux and Panda Boy are rated 146, all three were already guaranteed a starting berth, but the same could not be said of Eklat De Rire, Chambard and Kitty’s Light.

As that trio have all been dropped 1lb to an official rating of 145 since the weights were unveiled in February, connections faced an anxious wait and a potential random ballot to decide which two of the three would creep in at the bottom if none of the horses above them were taken out.

Christian Williams, trainer of last year’s Scottish Grand National and bet365 Gold Cup hero Kitty’s Light, admitted to being relieved that barring a late change of mind from Elliott, that will no longer be the case.

He said: “It’s great that he’ll get in now, it’s good for the owners. The whole season has been geared towards the Grand National so it’s great that we’ve got in.

“The owners have been looking at it for the last three weeks and had everything upside down. They’ve been thinking about it for the last three weeks and I just stayed out of it.

“I think Gordon declared Conflated for the Bowl this morning, so one of the owners rang me and said ‘brilliant Chris, we’re in’, then Gordon took him back out! Anyway, it sounds like he’s running on Friday hopefully.”

Of Kitty’s Light, he added: “He’s flying, it’s just a shame with the ground because when we had him in a good place last year the ground was good and it looks like it will be heavy on Saturday.

“He might still have won the Scottish National last year if it was soft, you don’t really know do you? You can’t discount him on the ground until he actually goes out there as when we’ve run him on that sort of ground before we didn’t have him in the best of form and it wouldn’t have been his ideal trip.

“When he’s had his ideal trip it’s been in the spring and that’s when the ground has been good. We’ll see how he runs on heavy ground in the spring – there’s only one way to find out.”

Meetingofthewaters provided his owner Paul Byrne with another big payday after scooting to victory in the Paddy Power Chase at Leopardstown.

With a total prize fund of €200,000 up for grabs, the three-mile contest is one of the most valuable handicap chases of the season in Ireland and once again attracted a bumper field of 27 runners.

Meetingofthewaters (6-1) was rated just 112 when snapped up by Patrick Mullins out of Eugene O’Sullivan’s yard earlier in the year – and while he was well beaten in his first two starts over fences in his colours and under the tutelage of his father Willie, he was a well-backed favourite when making it third time lucky in lesser company at Cork last month.

Having since been sold to a close friend of the Mullins family in Byrne, who has previously enjoyed big-race success with the likes of The Shunter, Corbetts Cross and Feronily, the six-year-old travelled smoothly into the straight under Danny Mullins and dug deep from the final fence to see off the rallying Panda Boy by four and a half lengths.

Mullins said: “It’s a fantastic result for Paul Byrne. Patrick has a lot to do with (training) this fellow, but I think he was hoping he’d be a Kim Muir horse and that is gone out the window now!

“It’s great prize-money and a tremendous prize to win with a horse like that.

“Paul is great at seeing gaps in the market when buying horses. He’s able to spot horses rather than paying big money. He has an eye for a horse and is able to put a deal together. He probably looks for horses in places that other people don’t.

“He won nicely in Cork and was a young horse improving all the time. It’s a bit of a lottery when you go into a race like this but when you get in at those weights it’s always worth having a crack.”

Meetingofthewaters was one of three winners on the card for the champion trainer, with Mark Walsh steering Dinoblue (9-4) to Grade One success in the Paddy’s Rewards Club Chase and Joystick toughing out victory as the 11-8 favourite in the concluding bumper under Patrick Mullins.

Mullins, who enjoyed an across-the-card seven-timer on the day with four winners at Limerick, said of Joystick, he said: “He was third in a point-to-point and we went down to see him at the Doyles. He’s a nice staying type and a real chaser in the making.

“He’s a real long-striding, old-fashioned chaser and a nice acquisition. He’ll stick with bumpers this season.”

Intellotto made a successful start to his career over obstacles in the Paddy Power I Have No Idea What Day It Is 3-Y-O Maiden Hurdle.

Placed twice from three starts on the Flat for trainer Joseph O’Brien, the 10-1 shot travelled smoothly on his jumping bow and passed the post with four and a half lengths in hand under Daryl Jacob.

Paddy Power make Intellotto a 25-1 shot for the Triumph Hurdle at the Cheltenham Festival.

O’Brien said: “The ground was softer than we thought it was going to be but it was a lovely debut. Daryl taught him a lot and he jumped pretty well on the whole.

“I think the logical step would be to come back here for the Dublin Racing Festival.”

The Eoin Griffin-trained One Last Tango (4-1) carried the JP McManus colours to victory in the Paddy Power Who Put The Wrappers Back In The Box Handicap Hurdle, completing a double on the card for the leading owner and jockey Mark Walsh following the earlier Grade One success of Dinoblue.

Griffin said: “He had a promising run on his return when finishing fourth at Navan and he’s come on a little bit from it.

“I was a bit concerned about the ground today, but he handled it well and it’s brilliant to get a winner here at Christmas for JP. It’s been a while since we had a Christmas winner and we’re over the moon.”