70-100w HPS Bulb Question.

I was wondering if the 70 or 100w HPS Bulb is worth getting, its around 10,000 lumens but I grow in a closet with JUST a fan for cooling and even with just CFLS in there it gets pretty damn warm. I was wondering if 2000k or 2100k 70 or 100w HPS bulbs would work for flowering and wether or not they would be to hot for a closet without some sort of AC.

I hate to answer a question with a question, but what sort of temps are you getting?. 70 watters are pretty nice when adding supplemental light but it's still added heat(albeit very little), you can get those suckers real close without burning though. In the right circumstances less than 4 inches. Very versatile wattage, but aren't quite as cost efficient/effective as a 150w when it comes to output.