The hippo tang and sailfin tang grow quite large and really aren't suited to a 75 gallon IMO
. Yellow tang or kole tang are great suggestions.
Coral banded shrimp become pretty territorial and I think one might kill peppermint shrimp. Someone correct me if I'm wrong.
2 angels in a 75 probably won't work. It's not something I would try. IMO
you should choose one favorite and stick with that.
For a ton of color, have you considered a fairy wrasse? They are generally pretty peaceful and don't eat coral.