Hmmm I would from my armchair say you need a minimum of an ICAO PPL so you are fine there. Depends if you wanted to exercise the rights of the licence upon gaining each ticket. If so, a FAA>JAA PPL conversion is not too arduous (but does involve some flying). If not you could I guess submit the CPL application with the ratings paperwork at the same time (assuming the applicaiton period for each signoff hasn't expired by then). Note you may need the MEP for solo rides along the way, this I am unsure of. Best to check with your FTO's Head of Training.