So give me some opinions on paint and interior process...Would it be wise to choose interior colors and design first then match the paint to it or vice versa?

A lady friend of mine said she always picks out her comforter first then matches the room color to it...that thought stuck with me.

If you want the colors to match exactly I would do interior first. There's only so many colors of vinyl, but infinite colors of paint. But sooner or later the interior will fade and the paint shouldn't.

Interior, just because you'll be seeing it the whole time you're out. You only see the outside at the dock. Nobody notices a scratch when you run by them at speed, everybody onboard notices every pulled thread or blemish in the vinyl. And they bring it to your attention to let you know it wasn't them that created the blemish.

As Warparty stated, interior first due to limitations on colors. A good painter will be able to match colors and create graphics by looking the interior over.. BUT, when it does go to paint, a good painter will want the interior removed in order to overlay the edges....