Well, I myself previously had Tanabe Springs, and then switched to Tein SuperStreet (with Pillow Ball Mounts)...
I also live in Maryland, and used to live in Baltimore...
For where I live (and considering that I have every other suspension upgrade available), CoilOvers were the right choice for me.
But I think that you did answer your own question when you said you drive through B-More... Get the KYB's with either Tein-Stech's or Tanabe GF210's in my opinion (both are about a 1.7"/ 1.4" drop. If you really wanna go lower than that, then I would seriosly consider the Tein BASIC dampers (only like $850), rather than the Eibach Sportline or Intrax springs (both a 2" or so drop).
If you are fine with a 1.5"ish drop then definately pair KYB's with a good set of springs, any lower than that (IMO) and you would be better to go with a SIMPLE coilover set-up, rather than put that much stress on a highly compressed KYB shock with springs that are to loo for them to function at their best.