I found a good deal on some 18" Cobra wheels (5 spoke style) Bolt pattern is right but I am not sure if the offset is good for my 2014, also not sure if head wheels would clear my brembos. Anyone know before I research a bunch and/or go check out the wheels in person?

 

It's all about the spoke design. If the spokes move outward enough to clear the calipers.
Two wheels of the same size and same offset and one might work and the other won't.

 

They'll stick out past your wheel wells and won't look right. 1999-2004 had a very different offset than the 2005-14 S197's. Pass on them and get wheels that are sized for the S197 chassis.