wihtout a shield your critt chance is low but you have decent critt damage.
defensive you want more resist and keep your health over 40k
gloves - swap vitality for single resist and find more crit chance%
Archon - head 5%+ crit chance Single ress dex +socket (%life)
belt - get more resist on belt you can find up to 80all ress belt and there are wiht +freeze on hit or %Life
amulet - its imba, if you find one wiht dex or single ress 40+.
rings - 1ring ring is ilvl 54! there you find 3+Crit chance and critt dmg. +( single ress / dex )
on theese items i can see you upgrade for more ress and also more damage.