Full Life Werebear EQ updated For 0.8.2I

Yes.

Werebear has a node that converts increased spell damage to increased melee damage.
Since the flat damage you have is split between phys, fire and cold, the relative effectiveness of the % increased phys/fire/cold damage affixes depends on how much of each flat damage you have. % melee would be best because it buffs all of the flat damage, as would % spell damage (because it gets converted to melee), %elemental would probably be next as it buffs both the fire and cold.

They would affect all of the flat fire damage from the weapon plus the small amount of base fire damage.