Mage/Dark Wizard Mage Build: Melee Or Poison

I am starting to consider an end game build. For example, for soloing Qira, would it be better to have a earth damage melee focus build or would a poison build work? Currently, I understand that Melee Mages usually deal a ton of Earth Damage, though (logically) they will struggle against bosses with high elemental resistance. I know poison damage ignores any sort of elemental resistance. So would a full poison build be better than a fast earth melee build against bosses due to the neutral damage? Let me know! Thanks!

 

how about a melee & poison mage hmm
only deals raw melee and poison damage, neither of which can be blocked elementally
hits about 11.6k dps with curse activated since it affects poison damage
dump remaining sp in def/agi the other ones dont do anything on a build like this