Nice car Jasper. I have a 2004 WRX Sedan and love it. I thought about the 2.5 RS, but after driving the WRX decided I could not go without the turbo.
Mine is my daily driver, and as such, I have over 31,000 miles on it. The stock Bridgestones are crap, but as long as you keep them properly inflated, they do the job.
These wheels will be going on my car in the Spring, after the snow is gone, along with new Springs and COBB Front and Rear Swaybars.
If your car is a five speed, I highly recomend getting a new shifter for it. Its a breeze to install and actually makes quite a difference. You can PM me if you want and I can tell you about mine.
Also check out:
http://forums.nasioc.com/forums/
Unlike a lot fo the WRX Forums, this one has a good bit of information on the NA Impreza.
Bill