Zeirens @ Bleeding Hollow - Community - World of Warcraft is most ideal setup for sub.
pvp power>agility enchants
pvp power is better than agility to cloak.
azure scale over armor of fang
use black wolf with greater assault
double argas is probably better but rings are fine if you don't want to faction
tail spike sucks, i honestly don't even understand why people use it
if you can't get pvp power to weapons, maybe get double dancing steels on shadowfangs 62agi>15 static
if you're going for glasscannon (full agility) then get:
Glowing Lizardscale Cloak with 9 agi(pref 12 pvp power)
keep armor of fang
keep bracers
put a dagger in mainhand for higher ambushes (scarlet kris is best)
pvp power enchants, if you can't get then i suppose 15 agility will suffice
same goes with rings, double argas or keep if you can't faction
6/6 monkey belt but doesn't seem worth giving up 5 crit for 1 agility