hmm..i would go with 6 ATI blue plus, 4 ATI aquablue special, and 2 6500k lamps. GE makes them, as do others. you could also substitute those for UVL aquasuns or some other 10k or less lamp. maybe the ATI purple plus or Korallen Zucht Fiji purple.
you are going to want to mix and match till you find the right look, but i think the most important lamps are the blue plus.
Yes, i know a few guys that keep sps
under that fixture.
you are going to want to sit it a bit closer to the tank eventually though. perhaps on the tank, with the supplied legs.