Jitensha
You won't remove the Nickel plate, it is a robust finish. In fact, Nickel doesn't rust, what happens is pin prick holes appear (where stones etc have chipped the nickel), exposing the steel below - the rust then "grows" out of these small holes.
The autosol/wire wool method can give you a near mirror finish, if you put enough effort in, but beware if there is a lacquer coating, as that will need paint stripper before polishing can be effective.
Once done, over time, the finish will dull and require buffing up again... unless you go to the hassle of relacquering... which isn't an easy process..
You saved up enough to buy my FRM Plexus yet?