LionFish says......
Take the Damsels back. They are a waste of time to deal with and they get too aggressive and beat up other fish. I always take mine back or feed them to my Volitan. I think you should get a 6-line wrasse. People are probably getting tired about me preaching about 6-line wrasses but they are great little fish with a lot of color and personality. Jawfish are sweet little fish.Clownfish are always cool. Pigmy Hawkfish are pretty cool to watch. Firefish, Bangaii Cardinals, and Gobies are good fish. There are more but they are the basic fish to have in a small non-aggressive tank like yours.