Another trick to prevent any bleeding is after you stencil off with fine line tape you can mix up some base clear and spray over that tape to seal the edges since candy bleeds under tape so easily
Your using urethane base. If you are worried about those high spots showing through why not shoot 2K High Build Primer on first? That is what I do. You can put it right over the original paint after you scuff it with 320grit no problem. Will fill any of those questionable areas. Then mix some urethane reducer with that primer to make it a sealer and give it a coat for smooth surface to to put that metallic ground coat for under your candy
