Just saw this and thought I should at least comment on how well the car looks.
I would say get the rear lower a little more also, there is enough adjustment to level out the ride height, but it looks good now.
As for some questions about the difference between the Zeta-S and Zeta-R, I thought I let you guys know as sometime it did get a bit confusing.
Zeta-S:
Spring Rate: Front: 8.0kg/mm, Rear: 6.0kg/mm
Aluminum Top Mount with Harden Rubber Bush
Zeta-R:
Spring Rate: Front 10.0kg/mm, Rear: 8.0kg/mm
Aluminum Top Mount with Pillowball Bearing
Damper valving also been increased slightly to suit
Do give the dampers about 2-3 weeks to fully bed in...
Once that happen the damping will feel softer and you will have better control over the damping range.