The High Priestess will be ridden by top hoop Opie Bosson in the Harcourts Series Qualifying Race (1300m) and Walker said his feedback will help dictate her spring plans.
"Opie wanted to ride her so he will give us an indication of where we are at," Walker said.
"If she goes well up there we will put her in the Tarzino (Gr.1, 1400m) and those races down in Hawke's Bay - but it will all depend on how she goes."
The High Priestess is a daughter of Group One performer Postman's Daughter and Walker believes she has the potential to be better than her dam.
"She is a pretty good horse, I think she is better than her mother, but time will tell," he said.
Walker bought Kinjabelle as a yearling and he said it has been a great breed to him.
"I bought the grandam as a yearling at the sales, she is 27 now and is out in the paddock here," he said.
Kinjabelle frequented Westbury Stud stallion Postponed over several seasons and Walker said his decision to focus on temperament has paid dividends.
"It was more temperament-wise (that I sent her to Postponed). I have bred dairy cows all my life and mad on mad doesn't normally work very well," Walker quipped.
"Postponed has done a marvellous job, I had four of them, but she (Postman's Daughter) was the only one that had that real killer instinct. She really wanted to do it.
"She has thrown it on to her offspring. The older brother had to be put down after a paddock accident but Clayton Chipperfield said to me he was one of his best gallopers when he was training.
"Mark Walker thinks a bit of the Tarzino filly (Sealed With A Kiss) that David Ellis bought at last year's Ready To Run Sale, so hopefully she is a good broodmare.
"She will foal a Circus Maximus in the spring and will head back to Tarzino."
Racing at the Whangārei Racing Club's Ruakākā meet on Saturday starts at noon.
– NZ Racing Desk