Even with a small CFL setup I ran in to heat problems over summer. Especially when heat gets to 113 F. The cooler weather is just starting to begin where I live and now looks like I will need to provide extra warmth. I'd much prefer it this way. If I don't get AC, then next summer the grow will be offline.
Organise some serious ventilation and/or AC like Mobay said. Otherwise your place will be like an oven.