Glad to see you made over to this forum. Sounds like you are off to a great start. I'd love to see a pic of your setup and your BP sometime.

Personally, I prefer young snakes - feels like I've raised them. Your setup sounds great. The size is fine, just be sure to offer plenty of hides if you get a little BP. You should have no problem getting a young BP at a reptile show. Go for small hides - tight, low and snug. The flower pot bases and butter tubs are a good start. If you want something more 'natural' looking you might be able to find some of the half coconut hides a the petstore.

Always such a relief to find someone who really wants to do things right and not rush into them.

Keep us posted!