No rear BBK?? You'd have half the rear kit by going with the standard from ST caliper up front. Your car deserves a rear kit!!
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."