The first, second, and fourth of those are well served by noting the difference between being right and being known to be right, and not worrying about the latter in situations where the other person doesn't value objective rightness. That basically describes my personal policy, anyway - I have a strong habit of going "oh, ok" and dropping the subject at the first sign of annoyance on the other person's part in such cases, unless there's something at stake beyond just their knowledge, and that seems to work well enough.