Dude, relax. You won't srape them unless you lower you car a LOT. My sidekirts drop pretty low, and my car is lowered 1.5", I dont have problems scraping them ever, its the front that gets me on my driveway. In a few months when I get my new struts, I'm gonna go even lower, and I'm not worried about the sides, just the front bumper.
Hopefully I can talk my mom into having our driveway redone where it meets the street. Right now there is a 'dip', just have to get it filled.