Ifu are using only 1 000w light in a room that size, air cooling with a fan should be plenty, that is a lot of room for one light. I have a set up the same size with 4000w and room to expand. With ambientsof 65f I cool all 4 with 1 high end 8" inline fan for a final too temp stabilized around 80f. If u do go for ac get the highest btu u can afford, it won't be wasted. This is just from memory, but I think the rule of thumb is 4k btu per 1000w of light. This is based on open. Bulbs that are not cooled by tube, hood or water.