Surely your course provider has given you a recommended plan of action & learning materials which will partially dictate the way you have to go. I can't think of any provider that does it exactly the same way, some are 2 and others are 3 modules. Their brush-ups, which you must attend, will also run a similar manner and doing anything different isn't going to help you. This is the procedure in the UK but I see you are in sunny Portugal.
That said my personal view is Met should be one of the first as it underpins nearly everything in aviation. You need to know about P of F to understand performance, similar with flight planning you should know about both general and radio navigation. Ops is a dumping ground for everything else but includes quite a bit of systems so suggest do last. Of course you can do things differently but you might find you are duplicating effort.
Last edited by RichardH; 3rd Jan 2013 at 07:00.