Good choice, the KYB are supposed to be a little bit too firm.
It should feel like a new car once it's all in. Don't forget a good wheel alignment.
My local garage that has done the refresh has 4 wheel alignment (not that it will do much good on the coupe), they are total perfectionists, he tracks it then drives down the road, then comes back and adjusts it and then goes off again. In his words, "With a car like this, you want it handling right". It took him 50 minutes but it's perfect.
The best mod is definitely the Whiteline 22mm rear ARB, it's made a huge difference when cornering. The front B6 shocks are much more compliant than the OE ones, but feel quite "progressive" in their damping. which has shown me that the rears need that consistency of damping.