Allan,You and I could have some fun moving. Obviously you've thought about what can sometimes be a pleasant job if one is prepared. Two items I keep handy are a good tape gun for boxes, et al, and a tape measure to make sure that doorway is really wide enough, plus knuckle room.
My brother and I agreed years ago that he who is the movee will walk backward and/or downhill under any load.
Now I've got this piano.....