I have the following wrasses in my tank - Flame wrasse pair, Trio Red Tail Tamerins, Pair of Lineatus, Rhomboid, Pair of Labouti, Scotts, Mystery, solarenis Solarensis, Rubrisquamis, Cleaner. I would be careful of the four line as I have had issues with aggression in the past. Mystery, exquisite and clown should be fine in that size tank. Just have plenty of rock work. Years ago I had a mystery that ate my cleaner shrimp. My current mystery has been in the tank for 18 months and a model citizen, but he was medium size when I received. Should be fine but watch for aggression. when I add a new wasse, I have him in a critter keeper in the tank so the other fish get used to the fish (seems to minimize aggession).
My experience