I recommend you skip the middle bit. You'll understand what I mean when you watch this movie. I mean you could watch the middle section at a quickened pace -- that'll work too. To be honest they kept the midsection bit to a minimum & it probably was necessary for the ending section to have more of an impact. For the most part I'm in agreeance with the filmmakers on this one -- they did a really good job.
Aside from all that, the first section of this flick BLEW MY MIND. I'd loved the meta-nature to it. Twas great!