Advice on heating for a vivarium inside a hardwood armoire.

[Kinstrome]

Thanks for the response. Is there any way I can replace the light with a mat or a rock, or something else?

Is there a minimum number of holes for ventilation I should use as a baseline? I'm fully willing to drill into the armoire.

EDIT Also, I can certainly do glass. I had just heard it wasn't as good of a heat insulator.