Couldn't make this one easy, could you?
You're on the right track with those parts. I'm going to suggest replacing the rear trailing arm bushings, as they can give some unpredictable axle movement. While they're under there (that's really a job for a shop) get all the other arm bushings checked including the panhard rod.
Engine and trans mounts are also probably due for a change. Another distinct possibility is a rear wheel bearing. Not being able to drive and hear it, it's hard to judge but there's really not much else. Outer rear bearings are really easy and not expensive.