Nice looking tank setup.
Go with a 150 watt HQI (double ended) metal halide pendant. You can find the pendant and ballast at many online stores and/or ----. Go with a 14,000K or a 20,000K bulb and that will be the only bulb you will need. The only assembly will be hanging it above the tank.....about 8-9" from the water surface.
Do that, and you will be set for whatever you want to put in there.
Personally, I think a nice RBTA would look great in there with a pair of cinnamon clowns to host in it......but that is just my opinion.