OP,
I am a little confused about something. Most really low income students need to contribute their earning to help the family. Yet you can afford to attend CTY. Even if it is money that you made on your own it still will somewhat undermine the low income image you are trying to project. Does CTY charge a fee? Not saying do not include it but it seems a little inconsistent so this is something that you may need to cover in your application. A why you work or not.
Can you go back to track in the fall for a few times a week?
For more information on what I was talking about in my earlier post
http://www.nytimes.com/interactive/2015/05/20/your-money/college-essays-on-money.html?_r=0
My favorite one was from a prior year (they do them every year) about a girl who goes to affluent neighborhoods to get wifi so she can do her homework.