Krallu, allthough I haven't yet started a course, I have spoken to many people who have studied for the exams by either supported self study (distance) or by enrolling for a full time course.
The 4 weeks of classroom for distance learning (2 weeks per module) are a brush up, where you go through practise exam papers. They are not designed to teach you the syllabus - you must have read /studied all the books before attending.
If you are a highly motivated self starter, and can commit to at least 15 hours of study per week, then you should cope with the distance learning. As I understand it, the volume of material is far more daunting than the technical level of the contents.
Hope this helps.