If you are seriously thinking of a second herpstat I not bother running it to a CHE or bulb but to a second UTH and set it to 80 to keep the cool side bang on as well. The rest looks great I use a Dark blue LED night viewing lights and a CFL for day lighting just on a dual timer. Remember that the labial heat pits respond directly to the optic nerve in their brain so the quite literally see heat.

ref, Kobayashi, S Neuroscience Research Supplement, 0(16): 124pp