I did Flight Planning, Navigation, AGK and Performance through the Uni - used AFT notes also for AGK (as was my weakest subject so thought the extra material would help) but the courses more than prepared me for the exams. I Self studied the other three - and that is easy enough to do if you are disciplined!
Is Len Sales still teaching or has he retired (as he has been saying for years now!) otherwise Jeremy is also a fantastic ground theory teacher! You can't go wrong!