THanks all!
So to answer a few questions..
Feeding: He is at least 6 years old, we measured his shed about 3'9" - 3'10". Have not weighed him but here is a picture for a better idea of size. He was previously housed in a small 12"x6"x4" tub with no hide. Only big enough for the snake and a water bowl. His previous owner said he is fed 3 small mice every two weeks and has been on this scheduled since they got him. We fed him this past Thursday night. Only a day or two after eating has he previously been this active so we have not seen him this active this many days after eating. He is usually a happy humble snake who stays in his hide and casually roams the tank.
Heating: Again, from small 12"x6"x4" tub with no hide. We moved him temporarily into a 20 gal tank. Heat varies since we are, afterall, in New England. (Maine to be exact but in New England, whats the difference?) So the days get hot and cool. Ambient temp of the cage never drops below 77 but on hot days can rise up to 86-88. He has his hot hide which is heated with a UTH. That can vary again with the daily temps but ranges 89-96. (It was 88 degrees outside here and 96 under his hot hide. No AC in the room, no heat lamp. Just ambient temp plus belly heat. His water bowl is in the middle but I try to keep it more on the cool side if he doesn't move it himself. Cool side never drops below 77 but can range 77 - 82. Since its hot and humid here, not sure what to do about keeping the hot hide under 97 without taking away his belly heat. I have heard and plan on getting a thermostat/rheostat. His humidity can sometimes drop to 55 by sunrise but I will spray his cage before I leave and put a damp towel over half his cage and it will stay between 60-70.
Housing: 20 gal glass tank. Screen cover. When it gets chilly, I will use a low watt blue night lamp but outside temps + living in a big room, no AC, and on the second story = self-heated room. Hot hide is half a log. I don't think he would fit in a smaller half log so he enjoys the darkness and coolness of the Maxwell House Coffee plastic container I cut in half for him. I removed the lid so its not completely open or closed but gives him enough privacy during the day. (Im starting to think since moving him into this enclosure that he is enjoying the space and should upgrade to a bigger tank.) He seems to like to climb things like the glass walls and hides, and humidity gauge but nothing else in the tank besides some moss for moisture. I placed black Styrofoam boards on three sides of the tank for privacy/darkness and when im being active (cleaning, moving around a lot) I will cover most of the front of the tank too.
Again, I will add a picture for better sizing. I only handle him for maybe 5-10 mins max about every 4-5 days just so he knows that I am not a stranger, I am not food, I am not going to harm him.