I have done this on a 65 GMC and it didn't take that long, on this model I took 12" from under the cab and 8" off the rear frame. Then moved the rear cab mount back 12", and the front bed mount was removed. Be sure to brace the frame diagionally and cross ways top and bottom. I used the Z cut method because it gave me more welding area and welded a diamond patch inside the frame's Z weld for strength. I plan on doing the same thing you stated, have a nice driver and drive it. Mine isn't done yet but the plan is to have it done when I retire in a couple of years and enjoy it. The only people I want to impress is my wife and me. It is your truck so do with it what you want and enjoy doing it.
