Doesn't it feel great when something finally works!? I had a similar conundrum with my humidity, tried all sorts of things, then finally one simple fix made everything perfect and it was just such a relief. But on a more important note: get those heat sources regulated! Your UTH will work with any t-stat, they are made to do so. For your bulb, go to home depot and get a $12 lamp dimmer. The IR heat gun is especially crucial for accurately dialing the lamp in (many good ones available on amazon for around $30). My tip is to mark spots on the dimmer that correspond to day high, and night low, though i would also plug that into a t-stat for safety.
This is how both my UTH and my RHP are set up, its basically a ghetto HerpStat 2.