i have the weitec hicon gt kit and have the front wound right down with the helper springs still fitted and the rear has been dropped to suit the front, think its about halfway down at the rear
thats how mine sits right now at this height
at 1st i never caught on speed bumps but after settling down i catch my subframe ever so slightly so i have to crawl over them now. i personally wouldn't take mine any lower than it is, it still means you can give it a bootful on a "spirited" on b roads and not worry about bottoming out