I've been thinking a lot about this question before I typed this out and I hope it say this right or clear enough for you and for the readers to understand:
Playing trumpet in a professional orchestra is in my opinion, as hard, if not harder to make than a an NFL or NBA team. It is a very select few who get there and more importantly, stay there. We read in a music class an article about a graduating class from Julliard and out of around 75 (I think) musicians from that whole class, 2 are actually playing professionally, 10 have comitted suicide from not being good enough, and the majority aren't even playing any more. Now I understand that this is only one class and results very from all schools, but this story brings me to my question:
In order to make it at the level you are at, and many others as well, do you have to have all of the pieces together when you enter college, or is there enough time to fix them? In other words, do you have to be a complete animal of the trumpet since you begin and get to be a monster by the time you get your masters in order to have any hope of being a professional, or can you be a late developer of excellence and consistancy and succeed just as well. How elite do you have to be? Answer this however you see fit...
I hope that was clear!