Hey,, never let that stop you. As Expensive Hobby said, doing it the right way is really the best way. We all try, but sometimes we fail or for reasons unknown to us the boa decides it wants to bite.
However,,,,,,,, I think you are excited about a boa and I think you should look at a male like I have. You will still get plenty of snake, but probably won't see anything over 8 feet and the girth of a male is usually less than a female.
I seem to have a big boy going here as he is over 3 and a half feet at just over a year old and approaching the 4 foot mark but even if he bit me again, there would be no worries. Maybe it won't happen. I'm more cautious than before.
Start with a nice neonate male boa and be happy! You can do it!