If you've got money to burn, why not. The C63 is a damn fast and is a BEAST with a few mods.
Where in SoCal are you? My brother in law may be interested in your car.
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."