Mr Ed, whoever installed your springs should be shot for not doing the camber kits as well.
Dirt roads are not the problem with lowering it's rail tracks, speed humps, pot holes, car parks, etc etc. In other words every road other than the freeways. Trust me I have been there done that. Just upgrade the shocks/struts and maybe stiffer swaybars. the last thing you want is a car you can't take down to the supermarket carpark. McDonalds in Lilydale would definitely be out of the question as you would be scraping to enter/exit the carpark and drivethru.

Superlows, shortened struts for the front, meaty swaybar... camber kit if you decide its needed.

I have superlows on my car, it's a b**ch on some driveways etc but its by no means unmanageable. Supermarkets, maccas etc are fine unless there is a steep driveway out onto the road...