Ok due to the completly broken pvp aspect of the game, I've decided to shelve my 4 shaman's and am now working on a paladin and 3 druid team. My question is, how far can I expect to get, dungeon wise, with only a 4 man team?
I'm pretty certain most of the pre 60 instance content can be 4 manned but what about OL and Northrend?

Edit: This probably belongs in the PVE section come to think of it.