BMI doesn't matter, your other issue is also unlikely do be a problem but it depends on how much it would cost the canadian healthcare system to treat you if it became necessary, your treatment should not exceed approximately $CAD 20,000 per year.
it doesn't matter. I also have the same problem and I am studying medical in Canada. You will get the best learning method in Canada regarding to medical and they will also guide you about ncv upper extremities cpt codes. Best of luck for future adventures.