Mr3, please don't take this personally:
Andrew, being new here, it's probably good advice to listing to the Board Member with 5000+ posts. He has good advice. Decide what you want to keep, THEN we can help point you in the right direction. I'd avoid large angels in a 55 (that's everything but a dwarf - and only 1), and a mandarin is out of the question UNTIL the tank is mature OR you get one that eats other than naturally occuring tank critters - in other words, one that eats frozen food. I have 2 mandarins, have had them for years, and I've never seen them eat what I feed the tank.
Bill
215g FOWLR... and anemones, GSP, gorgonians... carp, that isn't FO!
"I killed my first SW Fish in 1971..."