How unbearable is the heat in there? I just started the process of prepping/rehabbing a rented shop space - last night as a matter of fact - that's 14' x 16' with an 8' ceiling, and I'm terrified at the thought of how hot it's going to get in there once the forge is up and running. So far, the tentative plan has been to install an attic fan (there's only one door, no windows), but is that overkill?