If it is going to be a while before you start buying these snakes, let me give you some other ideas. I personally think the future of the axanthic projects all the way around is with the fire gene. I would consider a trio, an axanthic pastel male, and a fire het axanthic female and a spider het axanthic female.....Preferably all from different breeders giving you a more diverse genetics (the wont be as closely related together)

everyone has the same complaint with axanthics the dont hold that baby color, I think the fire gene will keep that baby silver and black and prevent brown out.