Welcome, Bizz!
I know you're mostly concerned about getting the hardware as good as it can be. I'd like to recommend two products that will help you.
1. After you use the simichrome on the hardware, if you're not satisfied with the results, try: Nev-R-Dul (Google it.)
2. For the shells: Novus #3, #2, and #1 polish in that order. It'll get out all of the small scuffs, scratches and haze.
Looking forward to seeing the kit after you detail it. Congrats on a great buy.
John