I'm gonna barge in anyway, because I can tell you what you're gonna hear!
Everybody says trimming your pubic hair is better than shaving it. Shaving itches like hell.
Plus, all girls have different preferences. Why are you asking us to tell you? You have to ask your girlfriend what she likes period, because we can't tell you what she'll like (and she shouldn't like you for your pubic hair anyway)
Plus a 6.25 inch penis is fine! It's an adult size. It's fine - I don't see why you would be worried for a size like that.
that's my 2c and you're not gonna stop me from sayin it man!