I agree with you redneck that LPS's generally don't require the lighting of most SPS's. So, Guppy, you could go with LPS hard corals with less light than the small polyp variety.
I have 2 x 250 metal halides on my 110g and that's pretty minimal. However I will be adding another 220w's of VHO's in the next month.
Bear in mind, besides lighting, all hard corals will need pristine water conditions, trace elements, magnesium, calcium, alk, etc to maintain healthy specimens. It can get costly on a larger tank, but the reward is awesome.
