Aaaaaand, it continues. Jacob - welcome to FaunaClassifieds - home of the hard truth, with little of that sticky candy coating.
As I stated earlier, in response to your question about value/worth - those boas are worth no more than common boas...and, in the eyes of many, they're worth less. We understand that is a bit of a slap, even more so when you realize that you've been cheated; it's just, for many of us, hog island crosses are not a good thing because they corrupt an already limited bloodline.
Now, you've said you're going to breed them anyway. That is your choice, you (over)paid for them. My suggestion is that if you are set on your plan, and you so dislike the information you are being given, that you simply let the discussion go. Do what you are going to do, and honestly represent the babies when you decide to sell them. There are lots of people that buy cheap boas for pets - they will be your market. Yes - all they will be is cheap boas...try to make them anything more, and you'll be housing them yourself.
For now, you need to slow yourself down a little bit. You've accepted that they aren't pure hog island boas...but, by saying they are still half hog island, you are still misrepresenting them. The bottom line is that you don't know how much hog island is in them. The best thing you can do is lose the hog island fixation you currently (and understandably) have. They're just pretty boas.
As far as breeding options - hypo, motley, or a nice pastel would work for you. Enjoy your boas...you wandered into a touchy subject, that just speaks to the passion people have for these animals. Make the best of it, learn from it (the people posting on this thread are excellent resources), and understand that it's nothing personal.