Unless you are air cooling your lights your not even close with 10 tons. Will the ballast be in the room? Are they 1000 watt? (50) 1000 watt lights would create 200,000 BTU, far below the capacity of the 120,000 BTU (10 ton) a/c's. You need a 20 ton, or (2) 10 tons, or (5) 5 tons. Needing that...