While I appreciate the GKtech being a superior design, the amount you've had to fuss with it scares me away a bit seeing as this is a road car.
Is there any reason I shouldn't just get some nismo arm mounts, and either whiteline adjustable bushes in the OEM/nismo arm, or JIC -10mm rubber bushed arms?
That combined with ikeya or hardrace tension rods, and hardrace rear upper and traction rods sounds like it would be able to align my car at the theoretically ideal 350mm height without resorting to rose joints.