I support everything Megg said (switch thermometers, change hides, get a thermostat!), and will add... have you seen the How to Set Up a Tank tutorial on these forums? This is a great primer on setting up an enclosure for a BP and provides links/descriptions of all the equipment you need. Sorry to tell you your "pre-made" kit isn't right for your new pet, but those Reptile tanks are generally designed for species with less precise habitat requirements (ie. corns and kings).
As for feeding, unless you have a legitimate reason to feed your snake outside the enclosure (and fear of so-called "cage aggression" doesn't count), just feed your snake inside the enclosure.