If I used 6 quart tubs, I could probably house 6 hatclings, having two 6 quarts in one space. I have two baby Ball pythons, and one baby Western Hognoses. I also have a yearling normal Ball python, which I plan to put in the rack as well.
When I get back to my mom's house on Tuesday I'll be sure to go to Target, I'll also look at some more supply drawers if I can't find any good bookshelves.