I actually don't like yours Zal. Only reason being is this:

1/5 Thundering Strikes? I know Crit is an oversite in pvp but more is always better. 3/3 Elemental Precision? With WG Epics with + hit you can get pretty much what you need for PVP, so I would swamp the points there or just leave 1 in there cause I think you need to.

Also I think 2/2 Earths Grasp is better then going 5/5 Ancestral Knowledge, better just to go 3/5.