Keeping snakes at room temps can be done successfully however it is not something I would recommend to a new owner with no experience with BP.
There is also a cost and efficiency factor that need to be assessed obviously keeping a room at a certain temps is only worth it and efficient if a large number of animals are kept, keeping a room in the 80's for a handful of snakes would be very expensive.
We just recently discussed this here
http://ball-pythons.net/forums/showt...ent-temps-only
and here
http://ball-pythons.net/forums/showt...24#post1659824
Where you can see what I have been doing for the past year an a half