First go for the job you like most and the role you like most. With time you can learn anything, dont matter how much time you have to play, maybe will just take you longer.
Second, how you know you are not good at Enochian windows if you only lvl 50 blm?
The most easy dps job, in my opinion, is brd. Just dont expect to be on the top of dps charts. For me nin, mnk and drg are the hardest to learn and maintain.