I did this calc on another board figuring the minimum for husband/wife: Here's my math: All numbers in lbs. Battery/case 50, propane 40, 10 gal H2O 80, toolbox 40, hoses 10, ext wire 20, sewer hose/fittings 10, pillow/blankets 10, minimal soda and sandwiches 10, 2 lawn chairs 20, small wall mount TV 20, 2X backpacks with clothes and toiletries 30 = 340lbs. In the real world, we carry more clothes, more food, and more niceties, like 30amp ext cord, extra hose, a hatchet, festive lights, astro turf carpet, etc. I figure 600 lbs minimum.