This is not a difficult job per say. I just did both my rear bearings.
Just detach all the kinks to the rear hub, tap it out, so that the rear hub comes off the flange. Take it to a shop, have them press it out on a hydraulic press. I paid like $40 to the shop to do both.
I also replaced all the links and am in the process to replace the differential mounts. This is on a 1989 300TE, 124 chassis
It is not very difficult.