Was able to load 480 pounds of donated water, food, hygiene, and bedding in the RV-10 and fly it for Angel Flights to North Eluethera where it will be distributed by boat. A few keys to loading the plane to the gills with gear are as such:
Put rolled paper product in the baggage compartment as it is extremely light for the volume it occupies to keep CG in spec.
Leave the rear seats in place and only remove the padding on the bottom to allow the uprights to ensure nothing heavy moves backward.
Fill the largest backpacking backpack you can find (I used a 60 liter Dueter backpack) with water bottles and strap in the co-pilot seat. The rest fits wherever it fits, starting with the largest boxes/parcels first then infilling. Was able to load then entire 480 pound pallet in the plane this way and keep it within CG. The water in the co-pilot seat helps.
The mission as per Mercy Flight Southeast:
"Bahamas Methodist Habitat has requested our help flying supplies to North Eleuthera (MYEH, White Crown Aviation FBO) where they have customs services and goods can be brought to Abaco and Grand Bahama by boat. Domestically, we now have supplies available to us in Ocala, and Ft Lauderdale Executive at Banyan."