@ccxclife Hey,
I don’t really want to give advice on something that I’m not sure I am knowledge about, so I won’t go off into details pretending that I do know. That being said, I would recommend looking at schools, that are just as challenging and well known as Exter, Andover, and Hill etc, but have a smaller student body and could offer a more supportive environment.
Good luck with your application process and overall journey! 
~LNRHD