I think stage 1 needs to consist of PPL then hour building with ATP ground school (14 subjects) as you cannot get a JAA CPL without a minimum of the CPL ground school (9 subjects). You would also need the CPL subjects to instruct on your PPL. It will take a few months more study at stage 1 to do ATP subjects instead of just CPL and a bit extra cost, but will save you a lot of time and money in the long run.Stage 4 will then be a lot shorter (by probably 9 months!)Just my thoughts any how. Best of luck.