I would skip AEMs upgrade. Pricey and inneffective for how much you spend. You would be better off with something that upgrades your rotors and calipers, like Fastbrakes.
How much of a brake increase do you need? A lot of people would be surprised at the difference some $22 Autozone rotors, $60 Axxis pads, $100 Goodridge lines and some $3.99 fluid will make.