I agree with the skip the 4 person tent advice. I've thought about one, but looking at the weight dissuaded me. Be sure to get a bag that rated at 20 degrees or lower (I speak from bitter experience). We just purchased two Therm-a-Rest NeoAir sleep pads. They are much more comfortable than our old Therm-a-rest pads, weigh about 19 ounces, and roll up to a size slightly larger than a water bottle.