Led Zep, to be honest with you I don't even think my sohal knows I have a yellow tang in the tank. He doesn't mess with anybody in my tank. I added him small though, to give myself the best possible chance for success. Sohal's are supposed to have at least a 180, that is what the book says. My only concern is that you don't have a lot of fish. I think he will move up the chain of command quite fast in your tank, being as he doesn't have to surpass many fish to get to the top. My sohal was the 5th tang added out of the 6, so I think they made sure he knew his place. I have had great luck mixing tangs, and non-reef safe fish with corals. Ultimately tangs need 6 feet or more of length on a tank, and you have that, I think you will be just fine adding a sohal, just make sure you get him small.