I have a 70 gallon with 56 lbs LR in it. I currently have a goby and a Occ Clown. I have several peppermint shrimp, cleaner shrimp, coral banded shrimp, strawberry crab, 2 featherdusters, and a camelback shrimp. What would be good to add next? I want a peacefull, colorful, and fun to watch...