I want to bring your attention to a blog:
Learning and Teaching Torah through literature.
I will say that this site is run by an Orthodox woman so some of the choices may not be in keeping with your philosphy, but often the books recommended are really good, such as this week's
The Family Midrash Says The Book of Daniel by Rabbi Moshe Weissman.
If you'd like to subscribe to the email you may do so by going to their website: www.torahthroughliterature.com
PJ Library? If your child is older, are aware of PJ Next?