I think they are great snakes to start off with, as long as you can keep up with husbandry. Since you have the beardies, I imagine that you won't have a problem with them.
Bad side... well you know how you started with 2 beardies and now you have more? Well it's even worse with bps. lol.
My biggest bit of advice would be to find a good breeder and buy an animal that is well started. Ask tons of questions from your breeder. What is it being fed, how often... etc.
If there's anything else you need help with, just ask. Oh and welcome to the site!