I used a two stage base/clear and no not down to glass all you need to do is get it flat/smooth then use whatever the recommended build/primer for the brand/type of paint you go with, prime it then sand down the primer flat/smooth then make sure it's all cured to appropriate time and then make sure you do a amazing prep with a surface prep'r right before you want to start laying down your base coat, also make sure you have enough paint and additives also enough clear to get it all done in one shot, just makes it easier to not have to stop/start again this is just my opinion, this was my first major paint job I'm sure some pro's will chime in with some good advice/products
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