at that lvl glooth bandits should be an option too, they die easily and drop a lot of money, as this is only a half answer i would say:
bosses (GT, leiden, urma, etc but the most important ones are after lvl 250, consider hitting such lvl for oberon, feaster, grave danger etc)
yielothax depends on the server but is usually worth even without might ring (specially if u remember to kill the boss)
im almost sure that you can deal with drakens too so consider them.
also always remember to use imbuements, im not sure what imbues use knight but critical is a MUST.