it should be ok with the six line. i think what you read meant the bigger wrasses. plus the coral banded can take care of itself and is no pushover. just to be on the safe side though get the biggest coral banded you can find.
that's a cleaner shrimp though not a cbs. coral bandeds are pretty tough where cleaners aren't at all. they don't have any defense against fish except to hide or hope that the colors he wears make the fish want a cleaning instead of lunch.