Let's put it this way, the Dragonsong quests in level 60 are shorter than the post-ARR quests by a mile. If you can get past the post ARR quests at level 50, then the level 60 ones shouldn't be much of an issue. For the latter, more is invested in the story and instances than the fetch quests.

As far as endgame goes, don't rush into endgame yet at this point when most are waiting for the new expansion to be released in a little over a month. If you are still playing, experiment with other roles, try side quests, and try to socialize with some people to be prepared for endgame should you choose to pursue higher-end content.

Rushing things just to get things done and try to get to higher-end content tends to burn people out to the seventh hell.