Due to your 17" wheels and thin sidewall tires you will feel the bumps no matter what. A good suspension setup will help but will not get rid of it all together. Tire sidewalls absord a lot more than people realize. Instead of GR2's you will be much happier with KYB AGX or Tokico Illuminas and if you want to spend the extra money Koni yellows.
Instead of the Tein's my first pref. & rec. is H&R springs.