The second row seats came out. The only difficulty was disconnecting the previously mentioned cables running to the left rear of the car that fold the seats down when you are at the hatch.
To level the area for packing gear, I made a platform that drops in and easily bolts down. The holes around the edge are for tie downs. I found a $20 adjustable cargo net that should be perfect for keeping the gear from shifting while letting us access a cooler and personal gear on the road. All the gear should fit without exterior storage. (And I still have roof rails and tow hitch for future use.)
The 3rd row area doesn't have a best solution yet. Those seats are never going back in unless I sell the vehicle.
I can hardly wait for this summer's trips!