Coral catfish... hmm they are pretty but they are often hit or miss, some individuals do well, others not. Although, be extremely careful with them, all coral catfish have a venom barb/spine, which could inflict damage. Otherwise they are pretty neat, do well in groups.
And about dwarf angels, I'm not familiar with these, best leaving an answer to someone else, but I know yellow tangs are usually hit and miss, but in a large tank like yours, I don't think they'd be that aggressive.
And last note, congrats on exploring the dark side, you'll be glad you converted.