I enjoy playing WAR a lot, and always have, and I find PLD to be very boring to play as. Sure, they're tough, but 1-2-3'ing all night kinda kinda "yawn". :P

Anyways, I spec VIT during prog, and then STR for Farm shit.
I don't stack SS. If I got it, I got it, if I don't, I don't care. Get that ACC, get that VIT, fuck the rest!
And as others mentioned, T13 ACC cap is 558.

For doing larger pulls, I only use Flash if you're low on TP for some reason. I often prefer to open up with Unchained or Berserk + OP, and then either a few more OPs, or weave in a Steel Cyclone, use Infuriate if you need to. Don't go overboard on OP spam though, 4, 5 or 6 should be enough to get far enough on enmity, you can switch to single rotation, to conserve a bit more TP. Doing big pulls is EASY.... doing a lot of Big pulls you need to be SMART.