My 17 yr old loves the gems. Would be the only reason I get one. Angels and butterfly fish are so beautiful but unfortunately not in a reef.Little late on the fish discussion. Definitely consider a White Cheek tang. Had one in my last tank and it was just an awesome fish.
And as far as gem tangs go; I was like you and wasn't overly impressed by them looks wise, but had one given to me by a buddy that was tearing his tank down. They are a lot cooler in person than what they are in pictures you see on the net. Don't discount them too fast.
I have nothing to add on the triggers since I have never kept one, and you keep fleshy LPS and zoas so the angels I like are out of the question.
Tank is coming along very well. Has to feel good to see some life in it.