On your coilovers that you're getting, the optimal ride height would be about 1-1.25 inches lower than it is right now, given that the Tiens that you got have a pretty good amount of travel, you really can't go any lower than that, otherwise you'll have to run them pretty stiff to keep from wacking the bump stop. Although, the way you drive, I'd say that's not much of an issue any way. Tien should be able to provide you with some info on optimal ride heights. What spring rate combo did you end up going with any way, If you told me, I've already forgotten.

Later,
Aj