Your stand is fine, I use the same one for my 55 discus tank.
tell me your favorite fish that is suitable for a 55g...i just wanna see your views and may steal some of your ideas lol....
yellow watchman goby and pistol shrimp, hopefully they pair
flame angel
coral beauty angel
lemonpeel angel.... very iffy when it comes to reefs, tho.
watanabe's angel (genicanthus watanabei)- but better suited to lower light setups.
Pretty much any centropyge angel will work, but some are less reef-safe than others. Genicanthus angels are said to be the most reef-safe, but most genicanthus spp will outgrow a 55. Any angel is a gamble from what I understand. Definitely stay from the pomacanthus angels.
ocellaris clown
percula clown
longnose hawkfish
bicolor blenny
royal gramma
firefish/purple firefish... Helfrich's firefish as well, but who could afford that, lol
Those are some of my personal faves.
Some say that a yellow tang or kole tang can be kept in a 55, but I'm not sure about that. Others say 75 gal minimum. Someone with more experience can give you a better recommendation on that topic.
Good luck with your tank, your LR looks awesome in there.