but I believe that gaining more knowledge will play in my favour...
In my experience, what you REALLY need for the FI course is an excellent understanding of Theoretical Knowledge at the PPL level, so that you can prepare long briefings with confidence and get the most out of the course. We had regular tests of our TK and it was amazing how many gaps there were or just plain misunderstanding of the basics, that the CPL exams may not equip you for.
TOO