82 is not to bad but if you can get it down another 10 degrees it would be much better. With a 600 in that tight of space you really shouldn't have to run those cfls. they just produce that much more heat. I don't know if i read this right but your using your fann pulling air into the room? If so you would be better off taking that fan and pull the air out of the room. As I said in the post above have your intake low to the floor and this will help with heat issues, unless you keep your house above 80 degrees.