Where did you get those hides? I am looking for natural rock type ones that have side openings (or anything semi-natural looking with a side opening).
Tank looks nice, I would do something with those thermometer wires though. I use paper towels under the aspen, poke the sensor though to the top and run the wires up the sides.
Also I assume the thick black sensor is the thermostat? If you are using UTH heaters you can put that under the tank. It doesn't matter what temperature it reads, you can adjust the temperature based on the in tank thermometers. Its all relative.