I rather prefer discussing in sections just because I feel there would be a bit more "back and forth." Also, our discussion might draw the interest of other readers, who of course could easily catch up and jump in. I furthermore feel the book can be savored more in this manner.
I think I prefer it this way as well. Gives us more to discuss than just writing up a quickie review. 'This is what happened, I liked it, the end.' I dont mind seeing premade questions to help 'guide' us thru and probably keep us on track.
I'm gonna pick up my copy asap or try to get it off amazon before we move.