I would just think that tackling the wiring is TONS lighter, easier to move around, and cheaper to 'mod' or restore than say that axle job in your pics.
WOW, how are you going to clean the inside of your axle tubes and third member? I'll be prayin for ya.
I'll be doing a fr/rr axle swap on mine and have had several injuries that came from lifting or things falling. So, I have some heavy duty help. (big "A" frame w/chain hoist, and a New Holland Loader) I DON'T need to get hurt again.
Plus, I like to just sit in the cab and pull on the lights and everything lights up, wipers wipe, blower blows and gauges ..well gauge what's going on!!
To me it's not going to start/run correctly without wiring. The other stuff can be looked at after you save up some $$$ and order parts.
Just sayin..
E