After rolling the fender flares, I decided that the ride height was way too low with the H&R springs. So I decided to use the original springs instead, but shorten them one cm to get the car two cm lower than it was before this whole project started.
I think I hit the nail pretty much straight on the head. The ride height in the front is now, to me, perfect. No rubbing can be felt.
I am not sure about the height in the back yet. It can stay this way until I decide it I want the back lower or not.