400to300H

Hey all, experimenting with my new rims. Gold looking face is machined and the remaining black feels rough almost like powder coating. Had my heart set on doing a full treatment of the barrel and face in ceramic (cquartz uk) but surface doesnt seem to lend itself to ceramic coating. If I clay bar the barrels would it smooth out and prepare the surface properly? Heres a shot of my initial experiment on the face and inside one of the triangles, its subtle but all I did was IPA rub and two coats of ceramic....bottom center triangle to the right of the valve stem hole. Thought Id ask for thoughts before I go nuts...