honestly dude, u can farm anywhere in pre season at any lvl. my Warrior/Ranger farmed there when he was in pre, then my Mo/W did also, then my ranger/mes did. just takes time. and for a monk to do cata it would be wise to use smiting skills also cause of undead. l8er
The drops are very weak. Though I guess it's good for Dye if that's what you're farming. I cleared the worm-infested farm a few times using undead minions and got a few Dyes. The lack of character storage and low quality of the wares makes it a bit pointless IMO though.