will lower your car about 1.25" so you won't need to change out your struts, nor will you need a camber adjustment. I would get this kit if you want subtle, and don't want to have to spend an addition $500 on struts, and another $200 on a camber adjustment kit. [These are practically the same thing as the Eibach pro-kit]
If you do want to go lower though, I would recommend the Hotchkis springs. They will give you a drop of about 2" or so, so a camber adjustment as well as aftermarket struts will be nessecary.
The Eibach sportlines you mentioned lower the fron 1.8" and the back abput 2.4" so you will need new struts, as maybe a camber adjustment but I'm not sure.