Ray, like you I had several wrasses in my old 90g - Clown Fairy, Christmas, 6line, Cleaner, a Carpenter's Wrasse, and a Candy Hog. No issues at all.
Kevin, like others have said, keep an eye on it and they will most likely work it out. Just make sure you have a good cover on the tank just in case one of the fairy wrasses decides to leap. I have heard several people say that they had aggressive 6lines, but I got lucky and bought the wussy 6line.
John
"Critics are men who watch a battle from a high place and then come down and shoot the survivors." Ernest Hemingway