Leon Macdonald sees similarities between Go Indy Go and her close relation Southern Speed but can only hope wet track ability is among their common traits.

Go Indy Go runs in the Group One Champagne Stakes at Randwick on Saturday with parts of Sydney, including Randwick, receiving rain on race eve.

Southern Speed, winner of the 2011 Caulfield Cup, had one start on a slow track for a Listed win at Morphettville.

Go Indy Go has been more precocious as a two-year-old but her trainer believes she will go on to be a genuine staying filly next season and the 1600 metres of the Champagne holds no fears.

Such is his opinion of Go Indy Go, Macdonald is leaving the care of the stable's big team at Saturday's feature South Australian meeting to his training partner Andrew Gluyas to be in Sydney to watch the filly race.

"My foreman has been with her for the past week in Sydney and says she has settled in really well," Macdonald said.

"She is a very professional filly who is getting better as she steps up in distance.

"I'd like to think she would be a Thousand Guineas and Oaks filly in the spring and who knows after that.

"I don't know about a wet track so we'll have to wait and see what it's like come the race."

Race jockey Chad Schofield was unable to get to Sydney from Melbourne to work with Go Indy Go on Tuesday so his father Glyn stepped up to the plate.

"Glyn Schofield rode her for me and said she worked well and handled the right handed direction," Macdonald said.

"Of course it's different in a race but all seems well."

Punters have warmed to the South Australian Sires' Produce winner, backing her from $11 early in the week to $6 on Friday.

The Gerald Ryan-trained Peggy Jean, already a Group One winner of the ATC Sires' Produce Stakes, remained the TAB's $2.80 favourite ahead of Fernhill Handicap winner Veuvelicious at $3.20.

Bachman, winner of the Baillieu and stablemate of the favourite, was at $4.50.

The third Ryan runner, Lucky Raquie, is an unlikely runner if the track is worse than dead.