I've found that if I can save searing gorge to 47-48 that helps get me thru those dry times.

If you do tanaris/Felwood/Hinterlands you should be right around 47ish when you finish them. Check the various instance guilds out there for all the instance quests for ZF/ST. Post 2.3 the experience for these are just insane. Also, depending on what kind of boosting you can do BRD is good experience at the high 40's.