I've been buying lighter and lighter stuff over the years. My stuff and most of the airplane stuff is already packed, so here are the weights for all of the airplane stuff, camping stuff, and my personal stuff. I don't (yet) have weights for my friend's stuff, but I've budgeted 25 lbs.
Anyway:
Tool bag and tie-downs: 12 lbs.
Tent, 2 air mattresses, 2 sets of sheets & blankets: 21 lbs.
Folding Chairs (2): 4.5 lbs
Rudder Lock: 2 lbs.
My stuff (clothes, toiletries, recharging gear, kindle, ponchos, hats, etc): 17 lbs.
Total: 56.5 lbs. + Pax personal gear.
The tool bag and tie-downs will go in front of the main spar, and the CG should be good down to slightly under 1 hour of fuel. After that, I'll have the passenger move a light bag to the front floorboards for landing. Fuel? 34 gallons is loaded. That should get us to the Chicago area for a fuel and bio stop.