Acc > ilvl > VIT/STR > secondaries

~100 hit rate is the most important, enough eHP to survive is next, then stack STR, the worry about Det/Crit/Parry

Chances are if you are undergeared you will want max VIT and Parry just like the first t9 kill groups. They were trying to squeeze out every possible chance of survival. Once you start maxing out your ilvl you'll be branching off into different sets. Max parry set, max det/crit set, full str accessory set. Then use your set based off the encounter.