Not sure, I like wrapped finishes personally but that is just me.
You might soak all your parts overnight in a heavy concentration of Dawn and water. I put all the pretty exterior pieces in one container and the interior non chromed parts in another. Things like rusty lug screws and washers could be put in a pill bottle of dawn / water and shook up to tumble the rust off the parts. I do that for non-chromed interior parts. Just shake up the bottle vigorously every now and then and the schmutz / rust will fall to the bottom.
If Dawn doesn't work, I use Evaporust but it is a little bit expensive. You can also reuse it so it goes a long way. The stuff is non-toxic and works great. After the parts are dry, I like coating all the interior parts with Fluid Film and then wipe dry. It is a lanonlin based lubricant that should keep rust from coming back. It puts a really like coating on the metal.
With the hardware off, you can clean and wax the shell. Novus #2 will help buff out the small scratches. I topcoat with a nice car wax.
Put the drum back together and you are set. Getting all the crud out of the threads really helps tuning too. Sometimes Dawn isn't powerful enough to get all the old gunk out of the threads so I use a biodegradable degreaser that is safe.
Good times!