Papoose Marlin 22, a Star BK or some other lw 9mm, and have your wife carrying an alloy .38 snub, so she can make noise and "call" u, and so she can committ suicide if need be. 40 lbs of gear is all you can manage anymore, and she'd drop dead trying to haul 20 lbs. So you'd have to be hauling 10 of the 30 lbs of gear she'd need, on top of your 30 lbs of gear, which makes 40 lbs total, so you'd better keep the guns and ammo part of things WELL under 10 lbs.