Bump Steer Kit and some changes??

Im lowering my car with a set of H&R SS springs. What is recommended for this. I know I will need caster camber plates but what else also. What are bump steer kits that steeda sells. I want to do some up grades to a few things to keep it feeling like new as it still does. Should I replace my bushings and or ??? Any tips would be great. The car is really solid and absolutly zero rust or anything. I just ant to keep it that way.
 
CC plates are a must and a bump steer kit, though recommended, is not necessary. i was planning on getting a bump steer kit but later learned i couldn't adjust it myself on an alignment rack so i went ahead without it

are you getting new shocks/struts with the springs?
 
how are the cc plates adjusted? do i have to go in to a shop with a rack or whats the deal with these?
Initially you set them to the same caster and camber as your car was before you installed them. This is done by measuring the distance from the center of the strut tower to the adjacent body panel and also measuring the distance between the strut tower (again, the center) to the firewall.

Once you get those measurements, be sure to write them down. You need to be as close as possible with this. Now, when you install the CC plates, you'll want to put the strut towers at exactly the same place as they were before.

When you go to get an alignment, the shop can now unscrew the plates to adjust them as needed. Just be sure to ask the shop if they can do that before they start, else it's likely that you won't get a proper alignment.

Also, many CC plates require drilling new holes. Be sure you're prepared to do this before you take on the task.