The best advice I will give you is to ditch the idea of a glass cage and to buy an enclosed PVC cage or better yet, a rack- preferably an Reptile Basics Iris CB-70 rack. The bins are massive and it comes in 3 or 4-drawer models. And once you have one BP you will want another.

Seriously though... the glass cages are so hard to manage humidity in. My one pied BP used to have awful, awful sheds. Since getting my RB rack her sheds are much better, and my other two also show shedding improvements. BP's, living naturally in underground burrows and termite mounds, take to racks like a duck to water. All of my other snakes are in ExoTerra cages. But the BP's really do better in racks.

I use aspen litter, I buy bulk rodents from shows or online. I have used the Petsmart rodents. They are fine, but way overpriced. If you have only one snake that may not matter. I use a snake hook for my one BP because he tends to assume any time the rack opens a rodent is coming. It keeps both of us safe. He is fine once I rub him with the hook. I always avoid handling my snakes until they have eaten at least 3-4 times with me. I also don't handle my BP's every day. I think it stresses them out. It's another benefit to having multiple snakes. You can spread the handling around. And also you never have wasted mice. 😀

Good luck! I have kept well over 50 different species, and BP's are my only repeat snake.