I'm with the cable route. I mean, I think each book deserves more than 2 hours to tell their stories. The only problem with this is, of course that they'd have to replace all of the actors at some point or film all 20 books (just AC and RJ) all at once and release each installment or season with 3 month breaks regardless of what regular TV season it is.
Or do a running Webseries shot in 20 minute increments. It could be done and be awesome. Look at what Whedon did with Dr. Horrible. Collectively, it's only 45 minutes or so, but it's a complete story told in 3 parts. Imagine RJ being told in 20 minute episodes that are released weekly without having to adhere to TV rules about seasons and stuff. Just plug through a book, then take a month or 2 off before starting the next story.