Lowering my 328i what ELSE do I need?

So I'm looking at rebuilding the suspension on my 1999 328i with 125k miles on it. I'm looking at getting the h&r sport springs and shocks. I don't have the sport suspension so this is supposed to lower my car 2" in front and 1.7" in rear. But I also wanted to go through and replace the spring pads and bushings, control arms, sway bars, and sway bar endlink stabilizers. My question is, if I lower the car, do I need to get adjustable sway bars and adjustable sway bar endlink stabilizers? Or would I be able to just replace the springs, shocks, and bushings and have the car not "sit funny"?