Ultimately my end game for him is to build a enclosure I can mount on top of a 6' fish tank stand I made a couple years ago. I sold the tank and now it just holds smaller tubs/bins/cups/water bottles/cloths... You see where I'm going with this.
I'm thinking a 6'x3'x2' and do a 4-5' viewing area with spare glass from work. I'd glue some sort of tile on the bottom/walls. Make another glass cut out/tile on the bottom for the heat. source. Caulk it all to help secure the glass and make it hold humidity better. I can even add glass to the top for the lighting... I want it to be tall enough that he could climb if it wanted.
AAAAHHH Haaa,,, You be the handy type LOL!
I have seen some extremely cool custom cages. This will be fun to see!