Just use CoO/Xaviera dailies (if you already used quests) with change of classes. You can do 10 levels higher dailies, and that should get you to L50 very fast.
For example, if you L16, do daily quest
Sacred Soil first , xp from that quest should get you level up, if not even more... and so on...
Just a little bit of paper and pen,
this chart and
this list (select daily quest for type, sort by quest level) and you can plan what dailies you have to complete, then just make simple pass through zone on secondary class and turn them in. I used to do this for fun...

(and kind of reminds me of how we used to play board games back in day...

)
And gold you planed to use on power leveling... get something nice from AH for yourself...