Some more impressions after installing non-RFT tires/wheels (245/40/18 on 18x8.5ET35 front, 285/35/18 on 18x9.5ET45 rear): the ride is the same, no softening felt. Actually today it felt a bit stiffer than last night. It's just perfect !
I uploaded some pictures in the first post. The pictures are like 16 hours after the suspension was installed, if it would settle about 5mm more in front the drop would be perfect for me.