The step up to the 1600 metres of the Randwick Guineas is in Doctor Doom’s favour but trainer Guy Walter believes the Spring Champion Stakes winner may still be looking for further.

The gelding is one of three Group One winners among the 23 nominations along with Manawanui and Mosheen.

“The 1600 metres is in his favour for sure,” Walter said.

“He’s looking for at least a mile and then longer.

“I’m pleased with how he’s coming along with races like the Rosehill Guineas and the Derby in mind.”

Doctor Doom ran fifth in the Royal Sovereign Stakes won by Hot Snitzel over Manawanui and ninth in the Hobartville Stakes which Manawanui lost on protest to Wild and Proud.

Laser Hawk and Wild And Proud represent the Gai Waterhouse stable while premier trainer Chris Waller will rely on Said Com.

The Robert Smerdon-trained Mosheen is due in Sydney from Melbourne on Thursday after the Guineas was added to her program which includes options ranging from the Coolmore Classic (1500m) to the Australian Oaks (2400m).

Race jockey Dan Nikolic rode her in a clockwise workout on Monday.

“She worked good this morning,” he said.

“She’s held her form really good and I’m happy with her.

“She goes up on Thursday and all we need is a better barrier than last time.”

The VRC Oaks winning filly, who was runner-up to Sepoy in last year’s Golden Slipper, drew barrier 16 of 16 in the Australian Guineas but still won by three lengths after a masterful ride by Nikolic.

Melbourne jockey Dwayne Dunn will take the ride on Said Com while Tommy Berry replaces the suspended Glyn Schofield on Manawanui.

It will be Berry’s third ride on Manawanui and one he rates his best chance yet of claiming his first Group One victory.

The Mick Price-trained Proliferate will stay home in Melbourne for the Alister Clark Stakes at Moonee Valley on Friday night.

The Australian Turf Club will increase its public spectator capacity for the Randwick Guineas meeting on the back of expected favourable weather conditions.

With the last of an initial 2500 general admission ticket offering sold on Friday, the ATC will release another 400 tickets on Tuesday.

The Randwick Guineas will be the first race meeting at the famous Sydney racetrack since it was closed in November to allow work to start on a $150 million redevelopment.

Saturday’s crowd has been capped because the first stage of the redevelopment is well under underway.

There will be no general admission tickets on sale at Randwick on Saturday.