Smith - Dedication to Kitava or Flowing Metal?

Started a new Smith of Kitava for the new league with an avatar of fire build, been fun so far. Not here to talk about balancing, just a question because I'm way too indecisive to decide on my own.

I have all 8 ascendancy points, most of them are set in stone but I can't decide if I should use the last one on Dedication to Kitava (Body Armour grants +100% of Armour also applies to Chaos Damage) or Flowing Metal (Body Armour grants +50% of Armour also applies to Elemental Damage).

So far I haven't felt too squishy, only pinnacle bosses I've done on this character so far were Zarokh and the King in the Mists, and they went fine.

I already have most of my armour also applying to elemental damage from passives in the tree and it's nice, but I'm unsure if I should keep things as they are with extra chaos damage reduction, or go all in and get even more elemental damage reduction?