They get smacked far too easy, maybe if there is a decent CC it can do the job but at the end of the day its a cloth wearing ranged dps so its gonna die more than a Pally/DK/Druid.
Actually Arch is the best for afk levelling, and you get great xp from the start.
Just make sure your flying is as high as you can afford as the travel time is what effects the xp/hr most.
Same grind spot but the profiles do different things for mail/repair etc.
On the last page of this thread I provided one of them but there are others if you are willingly to look.
Personally I used my own which would run two between two hotspots instead of circling around.