I agree with everything jschmid said :thumbup:

first thing you should do is lower the car with GOOD QUALITY parts. You might want to look into getting some thicker sway bars. Your options are

1. Acura TL-S/CL-S OEM rear sway
2. Comptech or Eibach full front+rear sway bar kit.

As for lowering the car, TEIN coilovers are a good choice, since you can adjust the height, and the "stiffness" (16 different levels!) :thumbup:

In my case, I already know what drop I want to get: H&R Sports with Neuspeed Knoi Yellows (front perch set one lower). Hopefully that will even out the wheel gap (front has more gap than the back).

The coupes have more wheel gap than the sedans, but they are less susceptible to rubbing because of the way the fenders are "cut." The offset of the wheel determines how far the wheel sticks out...

As for wheels, I personally would go with 18s, since you will save a bunch from not going with 19s. As for tires, 225/40-18 is the perfect match, so your speedo won't be off, and they are "low profile"