Two-Tone Layering Question

What I was trying to say, is that particular paint is single stage. I should've looked it up first. As far as it holding up, well, doing the best prep you can and then using wax and keeping it clean after you're done is about all you've got to help it last. You only should need maybe three coats to get good coverage, more will just run the risk of trapping solvents, leading to de lamination, what you're dealing with now.