You can have 40 man raids.

Hmm, lvl 60 and already in Zangamarsh? Did you skip a lot of hellfire quests? I did most quests 5 boxing, even some collecting quests, and even farmed ramps for a while at lvl 63, and I still ran out of quests in all zones before hitting 70, so now I have to grind mana tombs for the last lvl. You might want to wait for the patch before continuing on much further otherwise you will be instance grinding too