I hear you. Thanks for the advice. But again, your use of "probably" and "be prepared in case" makes a lot of sense, since you never know what is going to happen. Even generally peaceful fish can decide they don't like one of their roommates and turn on them. These are animals that run on instinct, and there are no hard and fast rules that you can always follow as law.Your o is only a few months old and not full grown, that's not really the litmus test tank. IMO you'll probably run into some problems when that o gets bigger. Something working for a few months doesn't mean it will work long term.
To the OP:
Just know what you're getting into if you decide to stock this way, and be prepared to rehome fish.