I vote for the lovely side skirts and a rear bottom lip thingy to make the car look lower but no wing... you knew that though.

I saw one that I wanted to tell you today, try looking at wings for Audi TT's. I got behind one with a niiiice wing on it... but it was painted, not CF. But it was smaller, rounder and with close posts like you need.

(ps, I have those pics of the wing at R Speed)