What polish after wet sanding

To do it right isn't cheap, typically there is 3 pads needed, but you can go with a single compound system like Norton's Liquid Ice, or System One, they sell the complete systems with appropriate pads. I use Norton's, works great, used to use Maguires 3 compound system but you have to clean between compounds so the single system is somewhat easier.

Be careful as hell with the wool pad in particular, stay away from edges and hard lines or you could buff through your paint and that would really suck