We're less than a week away from the launch of Mists of Pandaria, when overnight we'll have to start the short grind back up to the level cap, after which we'll replace all of our hard-earned purple gear with fresh greens and blues.
When it comes to leveling, hunters have it easy. You could go through and choose the worst possible optimization and still have an easy time of it. I should stress this at the outset: you don't need any special tricks to solo quest your way to level 90.
That said, by optimizing your hunter for leveling you can certainly make the trip to 90 a bit easier. What follows are my recommendations for preparing your hunter for optimal leveling.