I put my coilovers in a couple months ago, the ride height was frustrating to say the least, install/uninstall 3 times, I ended up measuring the distance from the bottom of the bracket to the bottom of the tube. (still following? I have a single tube contruction on my megans) I set that to the same all around then just used the top adjustment to make my ride height with about a 1inch gap between the edge of the car and the tires.

hopefully that helps... if not, i'll fly out and help you