For sure you can do it yourself with a few basic tools and some decent ramps.
2 guys will be even better.
The most important tool is patience, the flex disc bolts are self locking so you're best of putting them on once, but if you do have to undo them and redo them again, use thread lock, they also strip easily with threadlock, so be careful.

Before you dissassemble everything, spend some time looking over the driveshaft, it looks simple, but there are some marks on it that will need to line up if you want a smooth ride. The front dlex disc is much harder access wise, and with the rear flex disc on, the front one will not clear the transmission.

Not too sure about diff mounts, but I imagine with the shaft off, it would be real easy to do.

The bearing will come out on its own, but you might as well get the center support since if you try to pull out the old bearing from the support, it will most likely fall apart, so save yourself a headache, get the support as well as the bearing and do it all up in one shot.

So, key points, inspect everything closely, take off the support bearing, take off the rear flex disc, then the front, then do the diff mounts, and install everything in reverse order paying attention to the marks on the driveshaft.

It'll be like a new car after you do this right, count on it.

xp

__________________
1985 190E 2.3L - a constant project.