Is This a good summary for my book?

I don't read much young adult fiction. The story sounds good. You have a strong premise. My only concerns being such a large group of characters to deal with as well as the fact that they are teenagers. Depending on their ages, when in the real world aren't they going to be somewhat limited? As angels I suppose they can sort of conjure money as well as a place to live. But that one detail of no adults being around and of course school always baffles me.