The 80mm fans I mentioned are ~50 CFM each. It would be preferable to keep all cooling necessities (ducting, etc) inside the wooden box. Could something like a Peltier on intake cool the air inside the box sufficiently to negate the heat buildup from exhaust outside the box? How about a U piece of duct with water at the bottom so that the hot air is pulled through, perhaps with a system to cycle the water?

Thanks for the replies so far.