leveling is quite rough at first but once you hit the mid 30s it becomes quite smooth and you are easily able to pull 3-4 mobs at a time without dying
the only frustrating thing I can foresee you encountering is that pre bwl patch 1.6 and ZG patch 1.7 which is most likely released 8-9 months -1 year after launch you will miss every other spell in raid because you have almost zero access to spell hit items