I've found druid healing to be really easy to manage high end, but a priest should suffice (Don't listen to the general QQ on the WoW forums about priest healing, it's not that bad)

Other than that, the class choice looks good, range dps is certainly much easier 80-85 than melee (or so i've found), however it's all personal preference in the end, but many of the other members know the in's and out's of all the classes and comps and will give a good in-depth reply.

Another comment;

Your avatar is awesome!