As Rosco said, you do it out of necessity. If you have a choise dont work full time and study, unless you know that you have SUPER DICIPLINE and a very understanding wife. I dont have the dicipline to sitt and study after a long day of work (but I do have the best womman in the world) so now I have to take a bite of the soure apple (swedish saying).
At the moment im working part-time to be able to finnish my exams in time and since part-time= half pay the next month wont be that much fun...
If you decide to work full time and do the ATPL I would recomend at least three hours a day and the whole weekend. Get a question bank from the start, it helps a lot.
Well, enough time spent on internet, back to Air Law...
D.