help me add to my tank

[old95er]

I have a 120 gallon tank that has been up and running for a few years now. I have researched the books for the appropriate species, and have some thoughts, but would like to hear your recommendations from experience.

It is pretty much on auto pilot, I don't do alot to it. I tried hard corals, and my maintenence habits don't support them. I have all the equipment to run a reef, see the tag at the bottom, and I woudl like more interesting fish. Perhaps a school of one more type. . .

Here is the current setup:
Vlamingi Tang
Niger Trigger
True Percula in a green carpet anemone

Corals: mojano everywhere
green star polyp everywhere there is not mojano

off the bat I would like to add a Chatodon Ulietensis(false falcula/double saddle) to try to know down the mojano. I also thought anthias woudl be nice.

I look forward to your input!

Thanks!!!