Been Playing this game for a long time now to Recommend you to NOT rush it, you will never fall behind the community that will hinder your progression, and if experience serves me well, most ppl that rushes the content are the first ones to come to the forums complaining that there's nothing else to do weeks after the release of patches...

Enjoy your time, explore, discover everything it has to offer do the side quest and unlock everything at your own pace, is less stressful, doesn't burn you out, and more rewarding, the story (at least for me) feels more complete and memorable because I pay attention and take the time to appreciate it. you will reach end game just as anyone else and you will catch up with everyone eventually before the first patch of 4.0.

enjoy yourself and don't let others influence your experience.