Jeeze mate you got a real mission there,it sure must be a labour of love for you,I spose first things first-strip it apart then re-evaluate,I would get frame blasted then prob powdercoated,try to locate a donor bike if poss,esp for the wheels,(you,d be suprised what you can find at the local tip)dont forget the usual stuff--clean-lube -grease-wax-polish etc etc, and rem-abcd bay can be your friend ! good luck, thats my 2 cents worth, there,s many expert ppl in here that will help you I wish you all the best !