I'm going to be ordering some more UTH's & thermostats this week so I need some advice. I just can't seem to get my temps where they should be. Any advice would be so much appreciated! Here's what I got but I will be moving Kasmir to a 40 breeder in the next few days.

20L
2 UTH's (controlled w/dimmers) with accurite thermometers on glass under substrate, under each hide-temps fluctuate greatly for some reason. cool side temp taken w/temp gun on top of substrate is anywhere from 78-80ish. Temp on warm side is usually mid-upper 80's, early 90's. That is under the CHE..there is a UTH on that side as well, but that is not being used right now since the CHE warms that area about right. The reason I got the CHE is because I was having trouble with my ambient temp being too low. I'd like to know exactly what kind of thermostat i can get that will control both UTH's & the CHE. I understand the Herpistat 2 or the pro controls numerous devices but that is a bit more than I want to spend. Can i get 3 of the cheaper thermostats to run each one or does anyone have any other suggestions? I'm concerned I'll have the same problem with my ambient temp when I move to the 40 breeder. Thanks!