I run KYB's and Eibachs on my 00 GT. Use the motor mount spacers to bring the axle geometry back into stock specs and skip the dogbones. That being said, I have very little vibration with nothing installed at this point. I have an axle that's been going bad for a while that is causing it and I know it. I don't mind the ride. To me it's much tighter than the factory junk, even with the stock 16's on it right now. A lowered car is never going to be a plush ride. It's a trade off for handling/looks. just depends on what you're willing to put up with.
I hated the 4x4 look once I got everything done so I dropped it.
I believe that the Vogtland lowering springs only drop about .9" so that could be an alternative to dropping it some and keeping the ride quality you want.