it depends on the anemone, some move around a lot and may sting corals. cnidarians sometimes fight, so which anemones do you want to put in?
also, you will have to find a new home for your yellow tang as he gets bigger, a 58 is not big enough imo, unfortunately. but the anemone sounds cool. did you want the tomato clowns to live in it? if so, were they tank-raised or ocean-caught?