Thanks for the pics, looks to be plenty of space between the diffuser and tips.
I have RCE yellow springs, Verus camber plates and SPC rear LCAs. Had to get camber plates due to strut/tire interference with camber bolts.
I have -2.5 degrees camber in the front, -2.0 in the rear, and just a small amount of toe in the rear. No abnormal wear in 13k miles with this setup.
Seems to be the general consensus that the car benefits from some negative camber up front. Below are RCE's suggestions for their yellow springs. Not sure how the RS-R springs compare.
https://s3.amazonaws.com/racecompengineering/instructions/rceyellowsettings.pdf