Agi or Str arcane knight?

[Iamcringe]

Which stat would be better? Most endgame hand weapons offer higher elemental damage, while choosing light weapons give you more armor because of agi.

Spoiler: Here is my build

 

[Arcanmaster]

Deer and Nanocarbon swords have highest cold and shock DPS and it is common for mages to have agi higher then str, so str mage should be more interesting.
For fire and death light weapons (dancing flame and shadow blade) are better.