I would happily pay more for a closer, better truck. A running/driving truck allows soooooo much more diagnoses and examination before deciding to purchase. Unless the shell is all you really want. But then I would demand all sorts of better pics of the rockers, up inside the bedsides, floorboards, etc before even thinking about renting a trailer. rust sucks and I will never buy another rotted Jeep project.
Just because it's a good deal, doesn't necessarily mean it's a good idea.