Doing the same sway bar myself tonight on my 13 SEL. Very excited to get it in there after comparing the sizes of the old and new one. Looking at coilover kits next after this I think to try and get her an inch, maybe 2 inches closer to the ground. I'm seeing that a lot of the cheaper sets on ebay advertise any C-Max set as compatible with the focus non-st, and vice versa, so I'd expect a stiffer focus kit to be pretty good on our heavier cars.
Did the front tires last year with some continental extreme contacts, and been meaning to get the same ones on the back because every other tire rotation the front tires are useless if I accelerate too hard, but alas, I am lazy.