I have H&R GVR4 springs on agx struts, and I'm not sure I would go any lower in the front. My transfer case is less than 4.5" off the ground. That's pretty darn low. The rear could come down some, but not the front.
Course my car has not seen the road in 8 years or so, but from what I remember bumps, holes, and just driveways were a bitch to navigate. /ubbthreads/images/graemlins/smile.gif
-PJ