Well you can take your time doing the training, I guess thats why the modular route is there. You can also work while doing the ATPL ground school via the distance learning route, though you will need alot of discipline. There is a deadline of I think 18 months to finish all of your ATPL's from your first exam, and also after finishing the last of the 14 exams there is also a 36 month deadline to finish off your CPL/IR, or else if you want to do the CPL/IR after the period, you will have to re-do all the exams again. There is also alot of part-time training (flying), so you can probably try that out if you want the working route.
But just a word of warning: when you start, you don't want to stop. Flying is just so addictive.
Brian304