your gear looks pretty solid actually. a few things i would change is:
drop t10 legs and get the crafted plate ones made if you have the gold or get the mail ones off of lady deathwhisper on 25man. expertise is pretty low in regards to sep for arms, since you can make up the dodged attack with a 5 rage overpower that is near 100% chance to crit once you are raid buffed. also if you have the gold, buy the boe agi neck (wodin's lucky charm or whatever the name is) from trash drop in icc25 to help you get that last bit of hit needed to cap. try getting the belt off of rotface or festergut 10 that has hit/arp on it and 2 sockets so you can drop those bracers for something better like those crafted ones from trial.
20 agi chant on gloves change to 44ap to gloves.
try getting the belt off of rotface or festergut 10 that has hit/arp on it and 2 sockets
change meta like you said and regem arp.
whispering fanged skull would be a huge boost to your dps over incisor fragment. actually, just about any trinket would be better than that. nobles card if you are going to be waiting for awhile on deathbringer's will (which is f'n awesome for arms and fury). whispering fanged skull is just as easy to get as far as which boss it drops off of (yay for the 2 best dps warrior trinkets to drop in the first wing instead of like sindragosa or lk).
as far as your priority list, i agree on everything except the 264 frost chest. run the t10 one, dont waste another 95 frosts on another chest, use them for saronites to get the crafted legs made if you cant buy them from the ah. and when you say belt im assuming you mean the leather belt that's better than the plate one right?