Tyrr Duelist Question

Hi now in 5% i will get lvl 85 and want to ask is it worth to learn Berserker Rage or stay with Duelist Spirit? About Dyes im thinking to go +Con. And last question for what is it now better to enchant the skills +Focus or +Power or +Armor Bypass. Sry for all this questions...didnt playd l2 now since 2 years and many things changed...