My wheels are 9" ET25 which I personally find to be on the aggressive side, but I didn't have a lot of offset choices with the wheel I chose. My favorite offset calculator
says my dimensions push my wheel outward by 26mm compared to stock (8.5" ET45).
Most of the tuners like to push the wheel outward with a very aggressive offset (some folks call it "poke" I understand) and run stretched tires to prevent rubbing. If you don't like the look, you may want to check with your dealer to get an idea of the tire size they intend to use. I don't like the stretched look personally. (Here is an extreme example of stretched tires.
I don't have a definitive answer for you. I simply want to caution you that you may require a (slightly) stretched tire to clear the fenders.