Quality of life is nice but if you want to level quickly stick with one job to fifty, if you plan to play this long term I would even think about getting the expansion cause once your 50 and start running main story to get to ishgard you'll be 52 I believe from what others have said here.

Imo I think if you like to level quick getting to 60 asap for the armory bonus is a must have, literally cuts leveling time in half. Gets monotonous but it's not completely boring if you find a good group to talk with