Folks who have used Duplicolor and Spraymax 2k cans - how many cans for a guitar body and headstock?

[Hodgo]

I’m trying to avoid running out or causing issues with a mostly emptied can, but this stuff ain’t cheap. Duplicolor says the can covers 10-12 square feet, and I know the Spraymax stuff goes on fairly thick.

I’m using acrylic here for the color coats and it’s metallic so I don’t think it will be require more than 2 coats of primer (first for sanding, second for coverage), 1-2 coats of color, and 3-5 coats of 2k to bury the vinyl graphics and give me enough to sand/compound/polish.

Anyone got an experience they can share with me?