Yeast priming before bottling?

I'm making the Affligem Noel clone from "Beer Captured". The recipe recommends priming the wort in the secondary with an additional dose of yeast 3 days before bottling, as the ABV on this one is about 9%. Rather than buy 2 separate vials of WLP 570, can I make a starter and save 1/4 of it or so in the fridge (in a sterile jar, of course) for this yeast priming? Or could I use yeast off the yeast cake in the primary fermenter? Thx.

I would use yeast from the starter. Yeast from the Primary might be too stressed after eating through a 9% beer.