Just my opinion but when you are working with 66% hets getting a pair isnt a great idea. If one turns out het and the other not then you wasted an entire season. If you don't get visuals you still don't know if you just missed the odds which is possible even with 100% hets. If your rosy boas are $300 then I'd just sell those and pick yourself up a 100% het pair of clowns for between 2-300.