I'm going to say this and only this. We have our 18+ rules for a few reasons. to keep the kids like yourself with their "the world owes me everything" attitude from getting their hands on a gun that they aren't even legally responsible for in the event that something happens and the cops get involved. There are tons more reason's one that I won't even mention here as the ones in the know understand what reason that is.
You want to be in the CF when you turn 17 well I congratulate you for a life changing decision. But with an attitude like yours you will get eaten alive at BMQ and if you pass that definitely at your chosen regiment. My recommendation to you is for you to GROW THE FUCK UP.