OP, I'm assuming you were referring to the thread I wrote up on wheel and tire sizing in one of your last post. I would definitely recommend the -12 offset and the 315's. It will look much better IMO. If you're going to order aftermarket wheels you might as well get ones that allow you to run bigger tires.
Tires sticking out 2" isn't a terrible look IMO either... if you want to see how that looks check out my wheel and tire thread HERE