Well, I style mine the same way I style my goatee: with a variable length beard trimmer. It’s good for trimming them up when they get too long, and keeping the bottoms sharp.
There are so many variables here that it would be impossible to tell. Do you have thick or thin hair? Exactly what style are you trying to grow? And by the way when are those funkie goatees going to go out of style. No offense, but you know they will and then 10 years from now you will be hiding all the pictures of you with a goatee.