If I were going to upgrade my wheels, I'd go with a 19" rather than 18". IMO, the 18s just don't look as good.
If I'm not mistaken, those offsets are also going to have your rear wheels poking a little bit more than your front.
I'm pretty sure those will clear your brakes but if you want to be certain, try calling one of the Work dealers and ask them. The guys at
RavSpec are very helpful.