Lowering springs

[Newsguy]

I’ve searched here and other sites but haven’t found a definitive answer. Perhaps there isn’t one, as perceptions are personal, but I’m trying to decide on my next step.
I have 99 with about 77,000 miles. As far as I know (second owner) original shocks. I also have an 02 S for which I’m rebuilding an engine with about 106,000 miles. That one certainly needs work.
I purchased a set of Koni adjustables and Vogtland springs, intending to put them on the S.
Now there’s nothing wrong with the 99, but I would like to refresh it at some point. I did a track day and had no problems. I am tempted to proceed with the update, but reluctant to lose the great balance of ride quality versus handling it possesses. It has a better ride than my 997 and handling at least equal.
What is your experience?
Oh, I do have experience with those Konis. I put them on my BMW E39 540 years ago and love them.