Anyone out there PvP with a Multi class Group?

Been doing the Midsummer quests and finding out that my PvE crew is lacking in the PvP everything. So figured if anyone had advice or has PvP with a multi class group we can post it all here.

My Group is
Pally Tank
Priest Healer
Shaman DPS
Mage DPS
Druid DPS

Trying to find Synergy with this group for PvP is well not easy.. but Rocks for PvE Content, as i've been able to farm Most heroics, as well as OS25, Naxx 25 with my guild on rare occasions.