82 isn't horrible. its doable if you have fans running in there moving the air around.
is it 82 on the floor or 82 right up by the lights?
but yeah you're still gunna need fresh air in there and also have you even thought about the smell? gunna be tough to get rid of if you can exhaust it out somewhere.
Yeah Get A False Door And Use It...make Sure It Fits Snug So No Light Leaks Threatin The Flowering Process....
Try this, you can cut the door with a utility knife.
They only had one white one when I went.
Get 4, 2 in 2 out
You need to get fresh air in. its not just the temps.