I'm in the process of building my baby a larger habitat, 6x4x6. I'm trying to figure out how many basking bulbs/CHEs I'll need. I know I'll want at least two, one for the main basking area and the other for ambient heat, but I don't know if I'll need more. Also, I plan to upgrade from a compact UVB to a strip fluorescent one. The largest fluorescent that the local stores sell is 36". Would it be better to get two of them to span the entire length of the cage, or will one in the middle be sufficient?