i used the eibach springs and did not need the camber kit. my car aligned perfect and holds it well.
a camber kit corrects your camber , part of your alignment, and keeps you tires from wearing funny after youve lowered your vehicle. some cars need it and some dont. it depends on the drop. i used the pro kit and did not need it. i would get some opinions from some other people who have or have not used the kit but i would say you will probably be alright without it.