The weapon you have is the best you can get outside of ICC25 lady deathwhisper, or maybe ToGC25, so I wouldn't sweat it. Unless it changed in 4.0.1, it has such high DPS that it makes up for the lack of agility.

Its very good to hear that hunter pets can tank. Did you have one pet be a dedicated tank and the rest were DPS? or did they all share the role?