Yo first time giving out advice.
What does simc your toon is summing at. From the logs you seem to sit at around 400k dps? Only thing to really suggest is try to get the 4 piece tier set for the bonuses. Everything else looks fine.
My armoury link below, got a lot of new gear last night so need gem/enchants but with my simulations my stat weights have become weird with simc saying that mastery is now then etter stat to have over haste. I assume this is because my haste is below 20%.
Armoury - http://us.battle.net/wow/en/character/frostmourne/Arzrig/simple
