B,
Coming from experience im gonna be the first to tell you that your gonna run into bumps and everything else threw you adventure of cannabis cultivation, the best thing anyone here could tell you is to read up on ventalation so you can learn ways to vent out your heat....several ppl have had this problem threw out the years and have learned ways to fix them, kinda hard for anyone to tell you anything without having your setup right infront of them but try this.....get ahold of some good CPU fans there very inexpencive and with enuff holes in your box with some of these little babys in them could be just what you need to cool your grow chamber down to just the right temp, and if all else fails you can think of it this way ( well theres that much more fresh air coming in ) you plants need fresh air not only to keep your grow room to a nice temp but you plants need to breath just as much as we do....so if that plan fails you do some reading up on ventalation ....hope any of this has helped...later all PPP