1)Prime all pieces while disassembled
2)Reinstall cab
3)Paint inside of cab and all areas that can't be painted when reassembled (door jambs, door interiors, fender/hood interiors, etc.
4)Reassemble doors, fenders, hood and align.
5)Paint exterior of reassembled cab
6)You didn't mention the bed, but I'm assuming it's in one piece and off frame. If so, then prime, paint and reinstall. If it's in pieces, the follow the same routine as for the cab.
Hey, I'm no expert but this is how the paint and body guy did mine and it worked well.
