If you are going to lower it you should do it the correct way meaning shocks/springs/camber bolts.. From what I understand if you lower the car and you don't change the camber bolts or install a camber kit then you will wear out your tires very fast and that will cost you in the long run....From all of the posts that I have read and the research that I have done, I would say a good way to lower the CLK (208) go would be:
-HR Sport springs
-Bilstein Sport Shocks or Koni adjustables
-Camber kit (there are several different kits available)
Or you could go with a cup kit from HR..
Anyone else care to comment on the Camber kit and tire life? Also allignment after installing just shocks and springs no camber kit.
..Hope this helps your decision.