The niger trigger would be a good choice...
yellow head jaw fish will not do well in a tank with large fish. They are shy and will have trouble getting food. They also do better in pairs or colonies..
3 tangs would be fine in a 240
I have no angles so I can't say much about them.
let me know where you find a scotts fairy wrasse.. I have had my LFS
trying to get me one for years. Very cool fish.. They are JUMPERS, mine jumped through a 3/4 gap in my canopy top through my lights and landed behind the tank
i could not believe it when it happened.. I had trouble getting him behind the 125 and he died the next day..