Since you seem to be online, thought I'd throw another one out there. I notice that in the genre list you have "Young Adult" but not "Middle Grade." The two are really rather different genres, and in addition to my own stuff, I've noticed a couple other pieces on the site that are really Middle Grade but under the Young Adult heading. You might even consider "Middle Grade Fantasy," the genre of the likes of Harry Potter and Percy Jackson. It's pretty darn popular these days.