jack3d17,
This is going to be my opinion only, I am not a recruiter. However, I have been through the same process 12 years ago.
The CF is looking for well rounded people. Right now, I see you are doing a lot in terms of extra-curricular activities. This is an excellent thing. However, it should not be to the detriment of your schooling. It comes down to time management. To me, it seems like you are spending so much time in sports, volunteering and other-than-school activities in general that you cannot put enough focus on your education, which seems like the reason why you are not doing well in school.
Learning to manage you time to do well in everything you start is a quality the CF looks for. Focus your efforts in the areas you need to focus them, not the areas that you enjoy focusing them. If you think that going through RMC will be easier than High School with many extra-curricular activities, you are in for a rude awakening.
Again, this is my opinion, and my opinion only.