Rugger,
As others have said do not lose hope. This is difficult event to go thru. It can shake your foundations as we do not feel like ourselves after the injury. You are actually ahead of the curve so to speak. Some take months to figure out they have PCS.

What you have facing your in the future no one knows. Things you may want to consider. School schedule, diet, supplements, rest, social activities. Your post is well structured and well written. Language skills is frequently a deficit that many PCS suffers struggle with.

That being said I think you will heal. You sound like an intelligent person that is aware of the circumstances you are dealing with.