I'm finally done. I was short on time and money for a bit there, but that gave me time to fine tune things in my brain. Here is the basically finished product. Tomorrow I just clean up the wiring behind it and tuck it against the wall, then move it the corns.

Lights done. Zoey inspecting things for proper connections.

Heat cable down. Shelf 3 has an extra wrap so that the python's lair is warmer than the corn snake's shelves.

Ceramic tiles on the heat tape, later to be sealed with silicone.

Just about done. Tiles down, silicone sealed, modified shrink wrap tubes attached.

Akki was the first one to move it. She seems to like it so far. Was cruising around in it for about 30 minutes before settling in under her warm hide.