Well, if you believe you made the right decision than I believe you did too. Only you really know, though. I know how temptation works, trust me on that one. It's easy to want to jump on an opportunity to give an animal a good home, but we can't take them all in...
I think you'll know when the right time is, and when the right snake comes along. It may be soon, it may not. You've only had your BP a little while, maybe you'll decide you want another BP, maybe it'll be something else, another species, who knows?
Any which way, I think your gut will tell you when the time is right.
Keep learning, you're off to a great start!!!