I have a friend who seems to like handing his pets off to me. Well, I used to "save" mice from this snake but last August, I somehow managed to take the whole snake, named him Green Beans (to make him less scary) and built him a tank.
I now know that glass tanks aren't the best choice but I put so much work into this thing that I don't really want to change it.

Green Beans's new home:
The back, left, and right, are completely covered in expanding foam , covered in grout and sealed and there is a big piece of foam under the heating pad for insulation as well. I also have about 80% of the top mesh covered with tin foil wrapped cardboard pieces to reflect heat and humidity. Once a day (or so) I waft fresh air into the tank with a piece of cardboard so Green Beans has a full tank of fresh air every day.
He has real wood branches to move around, a large bowl of water on the colder side, and a smaller one on the warm side (to help with humidity, especially when his belly is pink). He has a log to hide in on the warm side. The colder side has the branches arranged so that he can use that as another hiding spot, which he does.
Left and right have high shelves, the left one has a heat lamp from 6am-6pm but he never goes up there. I have the light anyways so that he knows it's daytime because my room is relatively dark during the day (architecture design mistake in the built of my house). A longer shelf is in the middle of the tank but he doesn't really hang out on any of the shelves except at night when he tries to escape.
I think his home has everything he needs but somehow I'm not sure he is happy as he constantly tries to escape. His warm side temp says 74.8F and 77% humidity but the thermometer is about 4 inches away from the ground. The cold side says 72.5F and 76 Humidity. I feel like these numbers are low but neither of them are directly on the substrate.
I am trying to figure out how to raise the general temperature of the entire tank but a 150gal glass tank seems to be very difficult to keep warm enough.
My Concern:
My dad nags at me for even having the 60watt bulb running for 12 hours a day so I don't have much freedom in adding more and more heating devices. It just feels like no matter what I do, the numbers (especially temp) seem so torturing low. I just want green beans to be as happy as he could be and I don't want to torture him. He is going to be 12 years old this year and he is really starting to grow on me. I'm beginning to actually believe that he is cute (at least while he's not eating).
Speaking of eating:
My main concern is his and my differences of opinions when it comes to food. With my friend, he ate about 3-4 live mice every two weeks or so, or sometimes a live rat.
When I got him, I was was extremely uncomfortable with anything living being fed so I had my friend come and do the deed for me. However id like to get over that. I read something along the lines "If he physically is able to eat rats and move on from mice, rats are nutritionally more valuable." So I started to feed him frozen thawed medium sized rats. No problem for 2 or 3 feedings. Since then he has not showed any interest in frozen thawed at all. So we began feeding him live rats. Now, that I am on my own when it comes to feeding, I am just so uncomfortable with it. (I used to have pet rats that happen to have looked exactly like the feeder rats do now) how can either I or he get over our little difference in opinion when it comes to food? I have probably wasted 3 or 4 frozen thawed rats now which is really not what I want to do.

I know he isn't living in ideal conditions (neither am I) but I'd like to make it as comfortable as I can for both of us. I'd like him to stay loving in this tank and I would like to find a solution for the food issue as well. My firmed gave GB to me because he "doesnt have time" so he isn't going to be reliable enough for me to count on to come feed GB every two weeks.
Any advice? I must figure out how to add a picture of the tank.