Cutting dead skeleton is really just an exercise for people less experienced with the saw to see how controlled and not scary it can be so they get the feel and become comfortable with it. We've found that a lot of people shy away just because they are 1) scared of the "power equipment" and 2)...
Depending on where you're from, it may be more convenient to head to SF from here (Castro Valley) I don't mind holding any frags for you that you might collect from the fragging workshop and can bring them to the frag swap for pick up.
I've got a stylo mini colony (about softball size) and that we can frag up if we need more pieces for people to be able to practice using the band saw. I've also got a big dead monti skeleton (not as fun but will give the experience of cutting coral skeleton) I've got 2 band saws here (1 gryphon...
The last pic is orange oxides. And looks like they are on a fairly thin flat rock? We could cut the rock with the band saw if you wanted to frag those. The green ones are probably a palythoa and not a zoa and would recommend not bringing those.
Under whites the yellows definitely won't pop as much. Blue lights are where HGs along with many other high end corals shine. Most torches can take quite a bit of PAR. I have some that are under around 450 PAR