If you manage to stay at just one Boa you have far more will power than I.
I did the same getting just one as a pet only to have it quickly tie Carpets for my favourite constrictor snakes. And, now I already have 2 ETB's on order (no exactly comparable I know) and am trying to get a few more BCL's in from Europe while eyeing the stunning Suri's at Nagy's and keeping an ear to the ground for either of the Peruvian BCC.
Edit: Okay, I didn't see the post above before I started typing. Thank you so much for not making me feel extremely weak willed, lol.