My take on the matter: If I can grab it, it can be braided! Your hair is certainly long enough for cornrows in the front & twists/twist out in the back.
like BlackMasterPiece said, i actually think some styles look better on shorter hair (i.e. finger coils).
here's one of my favorite youtubers, MahoganyCurls. she does all kinds of things on her TWA-and she's adorable. http://www.youtube.com/user/mahoganycurls?blend=1&ob=4