Other than reef radiance. Who else makes LED lights with red/green lights in the led mix? said:Radions do, they are what I chose http://www.reefaddicts.com/entry.php/29058-Making-the-jump-to-LEDs
You could get away with a single fixture and wide angle lenses on that size of a tank.
Other than reef radiance. Who else makes LED lights with red/green lights in the led mix? said:AI Hydra and Hydra 52 fixtures do as well and have violet and UV. I think it was asked earlier but what is your budget range? That may help you narrow down your choices.
ETA: AI Vega also has red and green but no violet or UV or diffuser lens. They can, however be customized with whatever color pucks you want and a few are popping up used too so you could save a bit with a used fixture.