Kind of where I'm at.
I have mixed feelings though. On one hand, taken on its own and part of an on going series, I think the deviations largely work to help expand the story's universe. On the other hand, I also feel like the deviations muddy the point of the book and the series may just become a generic Post-Apocalyptic(ish) story without any real center.
I've always felt that there wasn't quite enough material to merit an on going series and now feel like it would've made a much stronger impact as a limited series.