Eazzy, about your question of UTH and heat lamp...

The UTH provides underbelly heat on the hot end under the hide. This hot end needs to be close to 90 (temp gun or thermometer probe sitting right on the UTH under the substrate. All of mine are set between 92-95 (fluctuates between these ranges depending on the house temperature). I live in Florida so my house is set at 78-80 all year long.

The heat lamp may be used to raise the ambient temps if your house is set so that the air temps in the enclosure is lower than 80. In my house, the heat from the UTH is enough to keep the ambient temps around 82 for most of the year. So I don't bother with the heat lamp. Florida winters can get to freezing so the house gets cold for a few weeks. I use the heat lamp then for supplemental heat to raise the ambient temps to around 82.

Basically, you want a temperature gradient of about 10 degrees within the 82-92 range, give or take a couple degrees.