I'd be leery of adding the Dragonet until you are sure you have an established and thriving pod population(added my dragonet 14 months after I setup my 95 gallon and only after I added Tigger pods) and even then I supplement my tank once a year with tigger pods just to makes sure mine is well fed
As to coral you have a decent mix there but be warned your mushrooms can grow very fast and block out your other corals as they can grow anywhere.
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 My aquarium is nothing but a smorgasbord for my cats.....
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