JCE:

Unless you plan on upgrading your powerplant (read: more HP), I'd stick with the stock 300E brakes and go for the wheel/tire combo. I think there's more bang-for-the-buck in performance AND looks. Not only will you increase your stopping power with the new rubber, but you won't believe the improved handling. You can then upgrade your brakes at a later time with sport pads and maybe SS braided lines.

My 2-cents.

Brian