If your retired from an injury Id bet theres limits to your physical abilities. keep in mind the restoration of these boats becomes harder with size. replacing the interior in a small boat is nothing compared to the size and weight of the components you would be dealing with. Engine stuff is even worse as the size and weight of larger engines meand even parts can be too much to lift and move. I just pulled a pair of 2" shafts from a 38 footer. 114" ling and about 100 lbs. It took 3 people to get them out without damaging anyone or anything.

Its hot hard and dirty work. It rewarding to a point but the point gets farther away each year.