Sounds like there are some neat combos in the mix. I don't breed (snakes) or really have a lot of knowledge in pricing, but $1000 for those remaining snakes seems like a little bit of a long shot. I could very easily be wrong though. However, have you budgeted for the rack systems or tubs to house all the adults and babies, incubators, rat/mouse colony of frozen supply, freezer for the foods, and all the equipment needed to heat and regulate each one? In the long run, the snakes themselves are a one-time buy, its the supplies that will start to add up - especially if you have to raise them all to breeding age first.
Also keeping in mind that breeding any animal, unless on a decent sized scale or very high quality young, is rarely a good way to make money. You could be stuck with hatchings for months to forever, normals sell for next to nothing as do some other single gene morphs that I have seen.