What's The Shortest Time to Reach Level 90 in Wow
With release date of Mists of Pandaria, a problems players care most should be leveling, so what's the shortest time to reach Level 90 in Wow? Part of the point of your post seems to be asking for advice. Eschewing all professions can get you leveled faster. Playing a tank/healer in the dungeon finder can make you level faster. Heirlooms help not just for XP but also to avoid switching items out. Big bags.
On http://www.wowgold90.com has listed the best way to level up quickly in MOP 5.0, players can have a visit.