imo grab the new chest from the anvil vendor. and grab the old Badge legs from shat. ur block% is hurting a bit. and ocne u get ur defense up about 510 or so grab the neck from SSO.
also pick up the shoulder from netherspite next time u dodge through kara. big upgrade for u in Def and stam deartment. also gloves form maiden will help with ur block% up more.
other than that ur spec looks good and u ahve one of the better helms int he game. if u can geta load f money maybe try to buy the new engineering helm from a Sunwell guild. The pattern is BoE and i am sure they will ask alot for it but it is prolly one of the best helms in game.