My opinion is to stick with Dex / Int as much as possible. Use gear that augments STR if you find you're dying too much.
As for armor for DPS tradeoff - well - that depends if you run with groups often, then yes as typically your tank should be taking most of the hits and your primary job is to deal damage. I would say the exact opposite to a tank... sacrifice DPS for Armor.
Welcome to AL mate!
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