you can easily solo crabs in kuftal without a nin sub. even if you couldn't, you could just zone them. that would get you to 190-200ish?
besieged mobs are really evasive, i tried skilling up there with sushi and still couldn't hit.
ohat
spectacles
royal redingote/reverend mail/tabin jupon
blessed mitts(haste)/battle gloves
blood ring/woodsman ring/sniper's ring
virtuoso belt/life belt
vendor's slops
blessed pumps (haste)
i rarely use whm/nin. not that it's not useful, but it's not useful for the things i do (which includes campaign). not that whm/sch is absolutely better-- i just prefer to play that way. it's useful for soloing things that hit hard. oh, also mystic boon is amazing.