I had this done a couple of years ago- the mechanic removed the front end from the car and did most of the re-build on a bench. My rationale was that the labor was the most expensive part, and it might as well be done right the first time.

In addition to the ball joints/control arms, steering damper, etc. mentioned above, I had just about all of the items below done. Sorry for listing items already on your list, and/or mentioned above, but I think it's better to be redundant than omit something important.

New Bilstein shocks.

New tie rods.

New brake calipers, and rotors+pads- all were needed in my case.
Rotors, even genuine MB, are relatively inexpensive.
An argument can be made for getting new, not rebuilt, calipers, if the existing calipers are due for replacement. Reliable sources say the rebuilds don't last very long.

Check and re-pack, or replace, wheel bearings. If new rotors are going on, I think the wheel bearings need to be re-packed anyhow.

Brake hoses- at least check them. See separate threads strongly advising checking these regularly, and replacing periodically. I've read here that Pex is a good brand, and they're not expensive.

If doing brake work, flush brake fluid.

As already mentioned, idler arm repair; mine had already been done recently.

And when it's all back together, a front end alignment, ASAP.

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Marshall Welch
Seattle, WA
1982 300D-T