If you go all the way, you will definitely feel the bumps more. I rode in a lowered, chassis tuned 124 and it was like riding a roller skate. Holes the size of a pecan left noticeable bumps, so the astute driver learns to dodge little defects in the road surface.
You should search over on the Performance Paddock listings (where this thread really belongs) using camber or some such word.
Rear camber kit
I recall there was a lot of whanking over an Australian rear camber kit.
You'll need something to tweak the camber after lowering to prevent the greatly increased tire wear that will come about.
I like my W124 with new comfort Bilsteins, after my experience with the roller skate E500. I like to relax a bit and not have to worry about chipped teeth from bumps in the road.
DDH