You are just now getting to the speed leveling levels. About 45 or so you will stating quests for 15-20k XP and up. At 50 I really think is speeds up a lot and at 55 you are 60 before you know it. I have a bunch of crap saved up to turn into the argent dawn guys for a couple levels but the WPL quests get me to 60 before I can get there. Give it a little more time.