UGH heat lamps, an absolute thing of the past for me. i will never, ever go back to them.

for snakes, anyways. they cost a lot more to run, and if you have other animals like dogs, cats, or men (jk), then you run the risk of the lamps getting knocked down onto a carpet and starting a fire. and BELIEVE ME they start very fast! i've seen it happen.

also as you've found out, they're really bad for sucking up humidity.

if you are wanting to use the glass tank though, why not get a UTH and cover the top with saran wrap, like you said?