It's late so i'll try to be brief.
Symptoms-
1. High pitch squealing while taking turns (definitely lower ball joints)
2. Brake shudder while slowing down from higher speeds.
3. One heck of a death wobble between about 45 and 55 which usually stops below or above those speeds and can sometimes lessen while on slight bends/turns.
That wobble is my main reason for doing this job. I'm on the verge of 345,000 miles and we did the lower ball joints once....many years ago and beyond that I have never had to touch the front suspension. As such this job is long overdue.
Now part of my wants to buy this kit as i've had luck with the company in the past
https://mercede s source.com/store/126-chassis-lower-front-suspension-ultimate-restoration-kit
However for the price advertised I can't say that i'm at all confident in the quality of the parts being sold (God help me if I order it and I see URO stamped everywhere.....)
As such i'm wondering what on this list is most necessary in peoples experience and what is redundant and usually not needed (Also I have a low mileage parts car which I can source any of the metal components from but obviously not the rubber bits)
http://www.peachparts.com/shopforum/mercedes-parts-reference-library/192242-w126-front-steering-suspension-rebuild-list.html