I am not sure I like that mount. it gets pretty hot in a rv at times and I am not sure an adhesive mount that your going to atach to paper covered thin wood is the best way to do it. I would be more tempted to go with somthing like a retrofit fan in a standard 14x14 roof vent. if you have ac in your bedroom then that may not be possible. if you do have a standard roof vent you can usaly fish power from a close by celing light, if there isn't already power there, to run them, but that would be somthing to confirm first.
there is also the possibility of just runing the ac/furnace on fan only mode. not sure if that would work or not.