http://www.pexsupply.com/Lux-PSP300-5-2-Programmable-Outlet-Thermostat-Heating-Cooling-9547000-p
these work well. look around you can find them cheaper
if ur venting the hot air from the hoods into the room than using a second fan to pull air from that same room back into the tent your going to fight the heat the whole time. Have to find a place to pull cold air from ie ac in the room or vent hot air out of room
why not build a box around the window and put it over the window??? hmmm hard to explain....put a hole up high on window side and hole low on room side so air can come in but light gots to bend corners....make sence???