Graeme Spackman insists Wings is ready to break through yet the bush trainer has 300,000 reasons not to run the well-performed mare in a winnable race at Rosehill on Wednesday.

Spackman is clinging to an outside chance Wings can make a backdoor entry into the Country Championships Final at Randwick on Saturday even though she isn't qualified for the event.

"She's been nominated for the Final but she needs one of the horses who finished in front of her in the heat to pull out," Spackman said.

Wings ran third to Without A Shadow and Just A Blur in a Goulburn qualifying heat and Spackman maintains she should be lining up in the $300,000 instead of racing for a more modest purse at the city midweeks.

"She received a bad check at the 600 metres," Spackman said. "Without that I'm pretty sure she would have been in the top two finishers needed to qualify."

Spackman will know Wings' fate at acceptance time on Wednesday.

In the meantime, Wings is an acceptor for the Hyland Race Colours Handicap - a 1500m race for fillies and mares at Rosehill.

She has won four times on out-of-town tracks but she underlined her promise over Wednesday's course when second to Villa Splendido in a better-class race at the start of the season.

She will provide underrated jockey Patrick Murphy with the chance to make the most of a rare metropolitan opportunity.

Leading trainer Chris Waller has called on Melbourne-based jockey Glen Boss for midweek rides.

Boss will ride first-starter Wudang Mountain and ex-Melbourne mare Rezoned for the premier trainer.

Rezoned appeals as the better chance of the two when she takes on Wings after running on strongly to be just behind the placegetters at her Sydney debut.

Wudang Mountain steps out in the McGrath Estate Agents Handicap after being placed in two of four barrier trials.