We have a Honda 3000 W gen mounted in back of pickup bed (behind cab). We use it for overnighting at truck stops, etc., by running long, #10 ga cord to the trailer. We want to put a "camper shell" on the truck and still use the generator when we stopover.... Is this feasible, if we get one with openable windows on either side of shell, and include a fan to exchange air/exhaust/heat for the 8 hours or so of running? Thanks for your thoughts/experiences.