I sent you over there just a few days ago for one contest. Check her out here, she’s got another one going! I do have quite a few friends interested in juvenile literature, so I strongly recommend they give it a go as that’s where her focus is.
You don’t have time for anything but a quick review of your query and first ten pages, but go to Weronika Janczuk’s site and enter her contest. You have until 8PM EST!
Weronika is a literary assistant in a New York Literary Agency and can no doubt give valuable insights into your query and your novel’s first ten pages.