Should I shave my goatee? Hairstyle?

Im a 19 year old boy in college and my goatee is starting to grow in and I was wondering if I should keep it going or shave it. I kinda have a baby face because everytime I tell someone my age they dont believe that I look so young. Also I was wondering if I should grow out my hair a little bit, not to the shoulders or anything but just a little longer than usual, or should I get it cut?