UUC bar is nice, but there are other things you should probably do first to increase handling.
After more reading, I think you'll find the progression goes...
Tires - better ride, more grip, and the RFTs blow
Camber plates - increased negative camber for more grip
M3 front arms - more camber and firmer bushings
Shocks and springs - should install at the same time as camber plates
M3 rear bits
F&R sway bars - maybe combined with LSD because it requires dropping the rear subframe to install, plus you probably don't want the front bar without the rear bar. The bars should be the final piece in fine tuning your suspension.
LSD - for the super enthusiast
It is a slippery slope once you start modding your car. Good luck and have fun with it.