Good luck on this definitely a worthwhile project. I'm trying it out but unfortunately can't help fix bugs.
As I read on my Kobo I have a $100 Openmoko WikiReader, a little touchscreen monochrome LCD gadget (
http://thewikireader.com/) which has most Wikipedia articles (no images, no tables or lists), Wiktionary, Wikitravel, Wikiquotes, and ~33,000 Project Gutenberg books (not very usable but a neat try).