I have been looking through threads and on the internet to find out the difficulty of replacing some of my steering assembly.

I brought my 82 240d to an alignment shop and a technician informed me that an alignment shouldn't be done on my vehicle due to a loose center link. He also informed me that changing the center link was an easy job. My questions are:

Is there anything I need to know before I proceed or is this job not too difficult? I understand difficulty is relative.

Should I also replace the Tie Rod Assembly?

Is there any order to changing any of these three parts?

Any non-obvious safety measures?

Thanks in advance and any advice is very welcome!