I'm torn between 4 and 5. This was a brilliant concept to play with, but I felt sort of bereft upon finishing, like the story wasn't complete. I also thought a lot of issues were brought up and then addressed sort of prefunctorily, like slavery and stuff--it was like, oh yeah, I forgot that part of the story, I'll finish it up really quick and then move on...but I didn't get much of a sense of resolution. SEQUEL!!!!!!!!!!!!
Thank god I have health insurance, because I think I just punctured my cheek with my tongue.