Added length makes most beards look more controlled, rather than less, as the added length will give more weight to the hairs and pull the beard into shape a little. I think the beard would look great held together with a hairband once it´s longer, the sides won´t stick out as much then. Patrick, one of our great long beards, often wears his beard like that, maybe have a look at his thread for inspiration http://jefffsbeardboard.yuku.com/topic/28453/ . If you want to make your beard appear less wild while you grow there is beard balm and beard wax that will add some hold to the beard and can give it more shape.

I have written a bit about different beard products here:
moustache cups and mugsbeard brushes and combs
beard literature | simple homemade beard oil

my beard journey | my bart * aber herzlich beard oil | Bartöl store (external link, not affiliated with or endorsed by beard board)