what about fight caves? I think your levels are way too high for cows now, I would have gone 20 / 25 then barbarian village till about 30/40 then rock crabs, also make sure to do all the quests so you gain that quick exp.
here are a list of things not really packed so less likely to be reported ,ectt
-minotaurs (decent xp, no one really see you)
-chaos druids (for cash and decent xp) there are some by in taverly dung could have bot use agility pass to get there from fally bank
-flesh crawlers
-experiments could be good xp