I know the feeling about being afraid to drive your vehicle. Its not a good feeling when you drop a lot of money into something and then find out it may have caused more problems. Before you do anything, try a few things.
Disconnect the front driveshaft. From my own experience, that was a big problem solver for vibrations. Take it off and see if it still vibrates then go from there.
Get your tires balanced. Mosts shops only charge 20-30 bucks. A unbalanced tire makes driving at highway speeds a nightmare.
Check your tires air pressure. My tires leak air a good bit. When they're low, it drives like crap. When they're overfilled, it drives like crap. Don't know about where you live but its been hot here recently, causing air in the tire to expand = higher psi and higher psi causes to death wobble.
99' WJ 4.7, 3.5" lift, Bilsteins, JKS goodies, 32" Guard Dogs on 16x7 4" BS Soft 8s