What a funny day! I have a tank with a Niger Trigger, Vlamingi Tang, Fuzzy Dwarf Lionfish, Tile eel, Zebra eel, and Jewel eel. They all get along fine. The only problem I have is that I have to use a net to keep the tang and trigger away when I'm trying to feed the lion. If I don't, the two jerks will take the food and the lion loses his appetite for a few minutes. Jewel eels don't always get along this nicely, as the other two generally do well in communities. I just fenced him off to get them used to each other.
As far as ideas, I'm never much help with these "new tank" questions. I'm such an eel fanatic, that's all I end up suggesting.