Wow, where to start....Start out by buying a new bag of substrate and replacing the old substrate. His might have mites on it, judging by how dirty it is. So be sure to examine your BP for mites. You can choose to go with the repti bark, which I personally like, or aspen. Then get rid of those stick on temperature dials. They are pure garbage. I would then buy an accurite, to get a better look at the temperature and humidity in the tank. You don't need the heat lamp over the heating pad. I would place it on the opposite end. I would buy a dimmer for the heat lamp, because on full blast, it likely gets too hot, and its sucking up all the humidity. Next I would get a temp gun. This thing is a life saver when it comes to measuring the temp of certain spots, like the substrate over your heating pad, or the heating pad itself. From there, you really need a thermometer for the heating pad, because without one, its being operated at full blast, and is likely burning your snake. And finally get another hide for him, preferably one thats identical.
Don't worry about feeding him for a week. Let him get adjusted to his new home. In that time, don't handle him. Let him get use to everything.