Hit the female pieds with the male cinnamon, keep the females and a male (cinnamon/hets), hit the females with the cinnamon het male.

You may be able to get one in a couple generations, from there pick what coloration and white level you want, and keep breeding until you ultimately get exactly what you're looking for (and probably a heck of a lot of money).

Long task but at least you may get some pandas sooner than other alternatives.