I will be doing full new-car prep this weekend myself. Decontamination bath, iron-x remover, NanoSkin synthetic clay bar, one-step polish with Sonax Perfect Finish using Rupes fine polish pads, one coat of Crystal Serum Light, and finishing with two coats of EXO v4. Interior protected with Colourlock Faux Leather Protector. Glass sealed with Wolf's Nano Glass.
Will take most of the three day weekend. A lot of work but I love doing it. I find it therapeutic and rewarding. Everyone else thinks I'm crazy!!!
Out of pocket this is about $1000, but it would cost roughly $3500 to have it done by a pro.
I recommend Obsessed Garage for tutorials and products.