Trying to go with whatever morph is popular or will make more money will end up biting you in the butt later on. Find something that really sparks your interest and look for the best quality you can find with the traits you like. It takes 2 years for a female to grow out, longer if you have a picky eater. If you aren't invested with some personal interest in the project that's a long stinkin time. By the time your female has grown out and is ready to breed then the morph has come down in price.

I'd suggest you look at some of Colin Weaver's blog posts about BP breeding, he has some insightful opinions on the matter and puts a lot of the factors into perspective. And everyone's said it but it can't be stressed enough, find something that you like and can stick with because it's something you want to produce