Thank you for the good advice
This would be my third snake, and I don't have any plans to add more to that. So that would mean that I would have the ball python, boa, and a burm.
Yes, I did consider that - the importance of sourcing a dwarf burm breeder, as I can imagine that alot of people get caught out by snakes which are supposed to be dwarf, but end up growing to mainland burm size.
I also agree with what you said about feeding slow and steadily, that is definitely my intention.

If I find a suitable snake at the show in June, I can definitely see me coming home with one.
I actually called a reptile shop here in Wales, just because I was curious to see if they stocked them. They told me on the phone that they don't stock them because it encourages people to buy them that then don't want to look after them when they get big. I do respect what they meant, but I also felt a bit of judgement there