be careful with the screen tops. If you want to go with a cage i'd reccomend professional made caging over the aquariums. BPs need 50% ambient humidity which can be very difficult to achieve with the screen tops.
Also, don't use the half log hides the pet store is going to try to give you. BPs want a smaller, tight fitting enclosed hide.
If you are doing everything right you aren't going to see your snake a lot. Balls are shy animals who spend most of the day sleeping and hidden. In all honesty they make a poor display animal.