I leveled 4 druids and a paladin. I only had 2 raf accounts so I did them in 2 groups of 3. I find it hard to believe that pre60 your not one-shotting stuff already with 5x starfire. 3x starfire almost did it and would if one of them critted. Also as many of the above have posted, use cloth. pre BC most of the leather is feral/hunter/rogue gear. Dress like a mage if your going to play like one lol. When you get to 40 or whatever pick up boomkin. Have your main be in boomkin form and the rest in just normal caster/healer mode. Dont take any aggro reduction talents with the boomkin and you shouldnt have any issue keeping aggro over the others and they can just heal over time you through anything.

I havent even trained any of the feral skills on my druids. Not even travel form. I quested the whole way to 60. Now im going back and fourth between questing and clearing an instance. Im in the process of finshing the quests in Terrokar forest and have one run of Slave pens to do for a quest and ill be 66 or higher when that is over. Then its off to Nagrand and takeing on the instances in terrorkar.