Idea: the ceiling.
If you place metal wire grate, you can suspend the lighting and add electric plugs, basically lowering or removing the ceiling panels, then adding egg crate type wiring panels that you can hang the wire light suspension's from.
This would not cost a great deal and would allow you to move the ceiling lights around as you decide over time to change the aquarium's positions around.
You might also consider a HQI MH and a large bank of T5's for photography and/or some decent studio lighting.
The ceiling idea will help and allows some flex in positioning the lights.