Carberry has a great completion record over the fences and took the Irish Grand National on the same horse last year.
She said: “Touch wood everything will go right now until the day, he’ll stay sound and he’ll be there in the line-up.
“He’ll have a chance. If you’re not in, you can’t win and hopefully he takes to the jumps. Hopefully then he’ll be there at the end and he’ll be good enough.”
Richard Lee will not make a final decision over Le Beau Bai until as late as possible as the ground may not be soft enough for him.
“We’ll probably not decide until Saturday morning,” said Lee. “I know that doesn’t help anyone but we have to do what’s best for the horse.”
Barry Geraghty teamed up with Nicky Henderson for a great Cheltenham and victory for Shakalakaboomboom would give the master of Seven Barrows the trainers’ championship title he so badly craves.
The rain is not as welcome for him but he does have experience over the fences from when he finished seventh in the Topham last year.
“I’d be a small bit worried about the groundbut he’s handled slower ground before,” said Geraghty. “He jumps well, he jumped well in the Topham when he was seventh – he just needed further really and he has further now.
“He’s been progressing throughout the season and I think he’s got a big shout.”
No horse has won back-to-back Grand Nationals since the legendary Red Rum in 1973-74 and while some have come close recently, including Don’t Push It 12 months ago, it illustrates how hard a task it is.
Red Rum was trained by the late Ginger McCain, and his son Donald trained last year’s winner, Ballabriggs, who once again has been campaigned solely around Aintree.
McCain said: “We’ve won a Grand National so the pressure’s off to an extent – he goes there as reigning champ but he is bouncing. He’s been working as well, if not better, than I’ve ever seen him work before. The way he took to the fences last year, you’d expect him to run well again.”
McCain has another string to his bow in the talented-but-fragile Charlie Hall winner Weird Al who runs in the big race rather than the Betfred Bowl.
“There’s only one Grand National and we didn’t think there was a great benefit going for the other race,” added McCain.
“He can only be fragile for so long. He’s a racehorse and there is a job for him to do and we think he could take to the place. He’s ready to go and deserves his chance.”
There are currently five horses on 10st at the bottom of the weights and following the publication of the new order of elimination today Nigel Twiston-Davies’ veteran Hello Bud is currently 41st on the list, meaning he needs one to come out to guarantee a run.