Well, I just replaced my stock rear shocks with some air shocks(the others were beyond my budget.) I also rotated my tires. Tomorrow, I have to go get a new tire. The other three are pretty new, but this one is showing metal mesh
I also have some common problems:
The most immediate one is (now)violent shaking at speeds above 45mph. This used to be a minor problem. It would sometimes mildly shake around 70mph. When I get my new tire tomorrow, I'm going to have them balance all four tires. I hope that will take care of that one.
I also have a rear sway bar that broke at the ball socket. This is now unattached to the control arm and is being held up with cable ties. I wanted to remove it, but it looks really difficult. I think I have to remove the gas tank to get it out.
I also have a broken gas gauge and rear window regulators.

What brand of air shocks did you use? Do you like the results?

What caused that one tire to wear so badly? Did you have bad struts or something?

Do get the tires well balance and aligned. If nothing else is wrong with your suspension, then that should fix the bad vibration.

How did the rear sway bar break? Did you hit something? That'* a pretty tough piece for it to break without some sort of major external force involved.

That gas gauge problem might be the fuel sending unit. See this thread:
Is your gas gauge broken?

And rear window regulators are not expensive to fix, just a headache (from what I've heard). In case you didn't already know:
Power windows don't work?