Well personaly my build is great for pvp im lvl 44 and im beating lvl 55+ my plan is the leave DEX as it starts dont add any, add str and dex at at 50/50 lvl till u get 150 str
then keep pumping int u7 will have massive skill damage and be able to tank alot,
Lvl in cryptics till 5x-6x
Depending on jobs and money u should pick ur weapons for 55 personaly my fave is toxic as im c.medic on my main so i dont need para coz i got it as a skill.
But Vio is just as good if not better, if moneys not a issue try get def and skill def on ur armor and then SAR on ur blade
Or para if ur looking for the stun/then kill approach,
As for jobs assasin is the best pvp job as u have cloaking, u clock (hide) then pop out crack a skill or 2 and the targets dead by the time he realises what the hells going on
Ive also seen a few 55+ pure int sins, they says it works because they have hide then they pop out crack a skill and have HUGEEEEEEEEE damage with skills and because toxic/vio dont need stats it all works