First, as you've said before; Keep your lady happy and be respectful! I know I don't need to tell you that twice.
Secondly, if she doesn't like Boas, that's fine, it's her prerogative. However, keep in mind both Male BCI's and Dwarf species, do stay much smaller than Female BCI's or BCC's.
They also tend to be very predictable and move deliberately and fairly slowly. They can have a wicked strong feeding response, but otherwise, are really docile. They also start out pretty small and you and she can grow with he/she.
Katie loves Behira now (she loves her personality and inquisitive nature), and isn't too worried about when she's 6-7FT and 15 pounds or so! She's spent the better part of year learning her and watching her grow and knows her now. It would have been another story if I brought home a 7FT female!
Anyway, just my two cents. I love Boa's, but also think #1 is the most important thing. Do the right thing by your girl.
Good luck brother and keep us in the loop.