I don't think you will have an issue. My sixline was a little bossy when he first went into my tank but he has mellowed out alot. My scooter has no issues with the other fish in the tank, even the ywg who constantly lunges for him and the other fish. The scooter doesnt even notice the YWG at all, just goes about his business.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.