The genes would need to be het at the very minimum for both parents as the morphs are recessive.
The most affordable female I would consider would be a pied het vpi axanthic as then you can be sure all the babies ( even the normal ones ) are at least true dual hets.
The pied would all be het axanthic and the axanthics would all be het pied.
You can chase the odds by using a dual het female but then you get into the world of poss hets - which can be harder to sell.
Just my
I was thinking that, well about the a pied het for Axanthic.