hey m8, got same tank, nice size for its price.
Yer i would stay away from tangs completely, they are really nice but need a larger 100gallon tank unlike me who didnt know and put a yellow in a 30gall
but he was ok till i took him back aftre 5 months. anys. regals are prone whitespot magnets so if ur not a decent mainr fis keeper stay away and save your pennys.
Anthias are nice but as i researched they also need a bigger tank
Best options for the kids to enjoy but also not put querys on the size of your tank i would do..
Clowns
royal gramma
Some type of school fish i wouldnt touch damsels they are satan jrs! and constantly fight/ chase each other so prehaps chromosis as you said
cleaner shrimps very funny characters
a few gobys, eg like my pink spotted watchmen they are very colourful but also... very hardy!
hermit crabs (blue/red)
snails of some sort 1-2 hermits/snails per a gallon
dwarf angle ofcourse really good colours and all the comon ones are hardy too!
and prehaps also a reef safe wrasse of some sort eg six line..
thats just a few but they are reef safe and good fish to have, i wish i could stock atm but annoying nitrates are on the climb! grrr!