Your fine as well as tank size, however the zebra moray eel is pushing it IMO
. If you want to ever see the moray go for the full 250 lbs of LR
, if not more. Also I hope you know the "yellow" trigger fish won't stay yellow for long, their color changes with their surrounding. I have no idea on how these creatures would react to one another, so I'll leave that question for someone else. Good luck.