Red Wedding was mid-way through the 3rd book I believe. Doubt they'll make it that far this season.
On a similar note, I thoroughly enjoyed the second book but the third book was just a lot more fun. In the second book there is a massive build up to the Blackwater Bay battle and very little happens or gets resolved. In the 3rd book you get major changes coming fast and furious.
And yeah Arya's journey in the 3rd book is pretty fugged up. She kept going back and forth between Harrenhall, Acorn Hill, and finally Riverrun. Looking at the map in the book all these things are relatively very close to one another, yet she kept getting jerked around and got nowhere for the entirety of that book.