Wow. 1/2 a ton. That is a lot for such a small room. So maybe a smaller fan right above the lights would be best. Even if your a/c is only producing 8000 btu's, if bstreep is correct, you are generating 6000 btu's. The a/c may be enough just have to exhaust the heat. If not I know some guys at York International and they could give you a deal on a 600 ton chiller. :o