Just one comment about the six-line wrasse - it needs to be the last fish in your tank. As lovely as they are, they can be very "scrappy" and can dominate the tank - so if you ever want to get anyone else, it may be tough.
I have one, and know what I am talking about; as much as I like him, I am currently trying to determine if I want to keep him or if I need to loan him back to my LFS until I have fully stocked my tank. This goes on the theory that if he's the last fish in, he won't harass everyone who comes to live in "his" tank. I recently upgraded from a 29 to a 92, and he believes he is the emperor in that tank...and he's hard to catch!
Also, they do eat bristle worms...but mine also picks at all the rocks, so I don't know that I have much of a copepod/amphipod population at all any more. :? [/quote]