Do it for passion, not for profit; you'll have a much more enjoyable time if you treat the hobby less like a money pit/tree and more like a research lab.
That said, I'd start an axanthic queen mojave bee project of some sort, and probably get a retic for a companion animal. The resulting "not what I was going for" crosses would be interesting and profitable in some small way, I'm sure, but I'd rather trade them straight across for other animals that would further my breeding goals. And that's what it's all about, YOUR breeding goals. If you just want white snakes and want to skip the recessive genes, get a pair each of mojaves and lessers...between the four of them, you'll produce a fair amount of blue-eyed leucistic animals, and can breed the resultant BELs of both types to keep producing them, as mojave and lesser share the same space in the genome.
(someone correct me if I'm mistaken here)
x2. I do this to fund my track/weekend car enthusiasm, and it works amazingly well. I should probably start a snake account as well.