I don't know...personally, if I had adult female pieds, I would do combos. I would probably breed to a Cinny, Black Pastel or Pewter if you want something that will sell well (if I was doing it for me, I'd make some pied/albino double hets, too). I think Cinnies/Black Pastels 100% het pied, or Pewters 100% het pied would make a great project. You could keep a male and breed it back to the pied girls. Then you'd get visual combos, it wouldn't take too long, and I think those would be awesome. I'm sure you would make your money back and then some, too. I think that combos are really the way to go. That's just me, though. You should do whatever you like.