I definitely prefer doing frame, suspension, fuel, and brake work without the body and engine there. So much easier to get at it really good.
I've been using 120 grit flap discs and 3" wire cup wheels on the grinder. Makes a mess, but gets it done on budget.
The sheet metal is all pretty solid with some expected areas on the cab front floor boards, and some areas on the bottom of the doors. Otherwise in great shape. The orange will come off with a DA and get smoothed out. I do have a couple areas of concern with farm life cutting it here n there, along with some dings that will get hammered out on the rear fenders. For most part though, very solid.