Nice truck! 1) backup camera... shouldnt be too bad, worst case go with a wireless uint but you might still have to fish power wires to it. there is a newer topic on the escappees forum regarding back up cameras.
2)the sattlite dish should just be mounting to the roof, sealing the wires going though the roof and routing the cables but that wood work should come apart to make routing / hiding easy
3)a Bigfoot leveling system is a job best left to the pros, call any Truck converter and get a quote, I would think they could get you a better deal on the lift system to help defray the installation price.
good luck if you buy it we want PICTURES!!!!
-blizz