The ultimate question: Can I finish the exams under 6 months or preferably less?
Be advised, don't underestimate the JAA ATP studies, like a lot of people do, including myself! The JAA ATPL theory is the most comprehensive and difficult exam in civil aviation! It will take a lot of determination and dedication! Average time to complete the ATP studies is around a year, that's full time studying! If one has to work besides studying it'll take accordingly longer. I'm studying for the ATP exams myself, besides working a full time job. I must say it's extremely tough! I've completed 8 out of 12 subjects so far (doing the "conversion" FAA to JAA) and I've been studying for 18 months now! It also depends on the what kind of QDB (Question Data Base) you're using (e.g. Bristol GS around 9000 questions, Aviationexam around 16000 questions). Anyway, good luck to all of those who are struggling their way through the ATP studies, hopefully the hard work will payoff some day!!!