As title says .
I am aware ot the stereotypical threat of UD's WotF and such (tremor totems, etc) and have general PvE knowledge (i.e build, item -gear, consumables,recipes, etc-, encounter-wise) and have experience as lock (played tbc as SL/SL, deep afflock during wotlk, at least regarding PvP) but no vanilla-specific experience. I am mostly a PvP-focused player.
My focus is intended to be mainly wPvP with some BG premading in a mostly min-maxed (mostly since I'm considering a human, even if I know gnomes are slightly better, just don't want to play as a midget) tailor/eng warlock with proper consumables (including a bunch of SS in the bag). Mainly look for potential tips on outplaying WotF and other alliance-only lock threats (i.e. shaman stuff mostly), pet usage, potential items to counter and uses (skull of impeding doom comes to mind)...
Just looking in ways to improve myself and outplay better, specially against hard ones like the classic UD rogue. Reasoning things is encouraged.