2 and 3 are fine, and 1 is not.
5 o'clock p.m. is a common redundancy, at least in AE.I saw 1) in the fourth grade student's notebook and felt that there was something wrong with it.
Either he wrote it down incorrectly or the teacher made a mistake.
What's redundant about that? At least I don't have to wake up before dawn.... (it has no greater redundancy than "five o'clock in the afternoon"),