Depends significantly on the character archetype you're rocking and the story you want to tell via that character. Especially if you're looking at first person.
Is the character an athlete (e.g. Basketball, football, etc.)? Then go taller. Most sports want tall athletes.
Is the character a shota? Then have him shorter. Height will symbolically make him younger, as he's looking up to people.
Monster/superhuman? Taller.
High school grad, soon-to-be college freshman? Average.