With RAF, you're always going to level very fast. The last time I did RAF, I finished STV with starter greys in a lot of my slots. Don't worry about gear while leveling if you're just going to quest. It'll be impossible for you to keep "geared up" with the speed of leveling. If you find some nice deals on the AH for things that wil last you a while, that's fine, but don't go broke trying to keep up. You'll need that money for training and mounts and the like.