Your pH is good, not high at all. The alkalinity should not be that high if you are not adding anything to adjust it and I think it is a test issue. With a good test kit like recommended above you will be able to tell where you really are. The rest of your levels all look good from what I see. As others have recommended, you really shouldn't add anything unless you test for it so I would quit adding the trace elements and strontium.
Just my opinion, I think the reason fish are jumping is stress due to what you have/had in the tank. The blue tang, which you said jumped is somewhat of a spastic fish to begin with and requires very large tanks as they need a lot of swimming room. The yellow tang requires a larger tank as well, though not as big as blue tang. Tangs are just one of those fish, require lots of room and can be very aggressive among themselves. I don't recall what type of clowns you said you had, but clowns can also be aggressive, especially maroon and the like. Also you said you had 2, before the one jumped. Were they a pair? If not paired up they would probably fight until they determined who was going to be the boss, the female, same as it is with us

So if they were chasing each other that may have caused the one to jump.
If it were me, I would take the yellow tang back to the fish store for store credit, assuming they would do that, and stick with just the 1 clown for now (that's the only 2 fish left correct?). Get some good test kits and start monitoring your parameters. Get in a good routine of weekly water changes 10% should do you with what you have. Once you get in a good routine of testing, water changes, topping off for evaporation and general tank maintenance and all your parameters are stable, then think about adding more livestock. When you are ready to add more fish and stuff, think about what you like and then research that fish and see what their requirements are and how to care for them. This way you can make sure you meet them before buying. Browsing live aquaria is a good way to see what is out there and gives you a decent idea of their requirements.
The water changes should take care of all the trace elements. Since you do have a stoney coral (the hammer), it would be a good idea to also test for calcium and magnesium. The water changes should take care of the levels for you with what you have but would be a good idea to test to make sure and just to get in the habit of monitoring. Just take your time with stuff and enjoy. You have been able to maintain your levels with a vey high bioload so you are off to a good start. The fish you chose were really your big mistake and we all make mistakes. Yours pale in comparison to some of the mistakes I've made. Just learn from your mistakes.