Decals are cheap, and I'm not talking inexpensive. They won't hold up, I don't care who swears otherwise. Plus you'll have an edge that will catch every bit of wax, and that will drive you insane. The ONLY upside to decals, is that you can undo it if you grow tired of it. Paint is the professional way to go, and your options to customize are almost endless. A good paint shop can do wonders.
I'm not a stripe guy, but if it were me, I would go the paint route. Will cost more, but you get what you pay for.
Good luck. It will look good whichever way you go.
