With me and full fuel, I've got about 500 lbs. of remaining payload available in the Cessna. I'd take the R9s in the pocket, the P7M13 in a shoulder rig -- like RJ, the Camp 9 carbine, all the 9mm ammo I have, the Defender would go of course -- with plenty buckshot, the M4A3 would definitely go -- along with 1000 rounds of ammo, 2 cases of MREs, the tent, air mattress, 10 gallons of water, and the rest of my "survival kit".
With 4.5 hours of flight time (500 miles with favorable winds), I'll pick a direction suitable for evacuation and head out...