A good cleanup crew would be hermit crabs (20), snails (25), shrimp, (cleaner shrimp, peppermint, camel), starfish, the chocolate chip stars are really good at cleaning algea and are a good beginner star. Crabs such as sally light foot or emerald crabs. A good beginner fish would be clownfish. I like the false percula clowns the best they have really good personalities, they are hardy and colorful. I would say no for the angels for now they need a well established tank (5-6 months). Royal grammas are very colorful and hardy as well and they stay small, another one of my favorites.