A lighter color on truck and camper/shell helps a lot. Tropical Land Rover Tropical Safari roof is the best solution. I painted the top part of my Jeep's black roof with Solar Flex roof paint (95% UV reflection). It mad a huge difference.
Having a factory warranty on the whole package is a good thing. I hope the gas version has a large gas tank or dual tanks. Maybe Ford with offer a winch as an option?
My Tundra has a 38 gallon tank and it is great to have the extra range on long trips without having to carry jerry cans.