daaammm bro best of luck, i know how much it sucks especially when you have waited so long to install something and then an issue like this comes up, well what you could do is leave it half cf and half painted, you fill out the gaps and have that parts painted, and leave the middle part where the vent is in cf, a few members did it and i think it looks great check out the pics from this link
UAM JSE Fender Group Buy.