I'm not entirely sure how to advise you since I still have OEM springs. I set the Yellows at 3/5 in front and 2/4 at back. When new, this was really stiff for the street, but damping balance between the two ends of the car were well matched. If the roads are not fairly good where you live, you might want to go with one click softer settings. I have never changed the settings since installation about 80,000 miles ago.
I had to replace one of the fronts due to failed seals after only about 6 months. They were replaced by Koni under warranty, but I still had to pay labor and ship back the failed strut for credit.
