I want to clean my van up very soon. It is a dark green metallic. I have Meguiar's clean wax paste and the polish I have is Nu Finsh and the wax I have is Prestone high protection wax. I am not sure which one I will use. If I can I want to buy something else not sure what. So should I use the cleaner wax 1st then the other or after the wax or polish. I dont have a clay bar so that is out of the question. thanks