The suspension is probably not worth taking out unless you can do it yourself. It'll be at least $400 with an alignment, and you MAY get that much back selling it.
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."