Hi,

It is though a good option to do a diploma as it might give you a specialisation certificate but I would suggest you to pass in class 12 first because without your class 12 certificate, you may not be allowed to pursue your future as a commercial pilot or be it any other course you choose. You should definitely concentrate on one i.e. passing in class 12 because since the syllabus will be different for both, it might be difficult to handle.