wep: best if u use dagger but u can use swords too dagger's more consistent n cheaper but sword will hit high crits
armor: in cata if there's a tanker (barb, someone with high life and a ee armor) then u would use a str/dex armor perferably minimum of a Chain Mail
charm: use str or dex charm
i get 125 dex before i hit 55 because i have a mq charm which is lvl 35 so by the time im lvl 35 i have 125 dex already but most ppl also have a lvl 50-55 charm for their mq
stats: just like a fighter get 110-125 dex i would perfer 110-115 for a dagger and 120-125 for a sword
and rest into str
i personally put 5 stats into vita first but thats optional i perfer having more life, some people want more life others think its a waiste