I've got two UTH's, a ceramic heat bulb, and a daylight bulb.
The UTH's are stacked, one is a lower heat output and the other higher, but they're covering the same side of the tank. I use the lower heat one in summer, and higher heat one in the winter. The heat bulb is almost never on, unless it's a really cold day/night and I've just fed her, and want it to be a little more comfortable for digesting. It's sortof an emergency backup that I might steal to put with leopard geckos. The light is only there on a timer to provide her with constant day/night cycles. I've never changed the time that it's on/off for, but as she's in my bedroom she also gets secondary light from the bedroom light for longer days, sometimes.
I'd recommend just a single light on a timer, 12 on 12 off, the UTH on 1/3rd the surface of the tank, water on the cool side, and of course 2-3 hides dispersed evenly. The cool side on my tank is around 70-75, the warm side is around 80. She seems happy with this setup, always on her warm side, even in summer. Humidity is low in the air for some reason so I have to keep spritzing, because it goes below 30%. every other day works to get it back up past 40%, but 50% is the most I'd want to keep it at.