If you just installed the prokit a week ago.... you'll want to wait a little longer to allow the springs to completely break in (the car will lower a little more)

Secondly... it depends on how you drive, and the roads that you drive on. You don't want to be worrying too much about potholes, and bottoming out going too fast over dips and such. If the roads are bad, or you are not so well accustomed to driving a lowered car... then I'd say that the drop is alright with the prokit. You got rid of the 4x4 look already, so it's really just now a matter of weather to go lower or not. Remember that lower means stiffer and harsher ride.