ok, so my plan is building cages with these dimensions, 48Lx20Wx14H, would this be sufficient for an adult female ball python?

For heating, im thinking of using a UTH, but it being inside the cage, with a piece maybe 1/2" plexiglas over the UTH, or maybe it sandiched between two pieces. Do you think this would work, and be sufficient protection to keep my bp from burning herself?

I plan on using furniture grade 3/4" plywood for building the box.

ive never built anything like this before, so, any helpful suggestions/recommendations would be greatly appreciated.