The only concern would be if you can see the coverage of the finish white over the primer white, but a flat white primer followed by a gloss white finish should be workable. Or if flat over flat, just use multiple coats of the same paint.
I like white primer and use it pretty much exclusively except under metallic silver.
I usually mask where the decals will go if those are a kind of regular shape because decals are designed to read as true colors over white. Same with translucent paints.
Bill