I figuired I'd post a schematic of the prospective wiring job for the projector. This is for Peer review tear me up if you wish. Also if you have any other ideas let me know thanks

Ok the way you have it wired your son could still turn off the lamp with the dpst. You can get rid of the dpst and replace it with a locking spst. Then wire one switch to the fan and thermo and interlock it with the lamp switch..