Yes, go Mage Weller. Barb or Fighter Wellers take considerable FG investment.
With your 16kfg, I'd do this:
~500 MQ Weapon
~500 MQ Armor
~2k MQ Damage Charm (Ice or Earth IMO)
~5k MQ Heal Charm (Heal or Focused IMO)

most important part of a good Mage Weller
This would probably give you 95-100% Well success.
That leaves ~8k for climbing gear, which I would spend on Melee for catas (fighter/sammy/pally). I would also get some HM gear if you want to cata the Mage too.