If you look underneath your car you will notice that at the UCA and LCA joints there are bushings, if they looked cracked or mushed their bad. You can't see how good the balljoints are by looking... I actually don't know how you tell they're bad, so they're old and probably a good idea to replace them. Shocks, just bounce your car a few times, it should stop bouncing after like to bounces. You also know their bad if you have to hold on for dear life when you take a corner at 5mph(it happens, I drove a friends thirty year old, well driven, Saab, fun experience
). Also, if your car can't keep an alignment that's a sign as well. You could be like about 60% of the people that own old cars though, replace the shocks and be happy if your parts are good, and just be ready to replace tires a little more often if they're not.