Apparently Terrence Malick and Emmanuel Lubezki had a shared dislike of "light sandwiches". You can see the deep shadows in the indoor scenes in Tree of Life. Their behind-the-scenes must have looked like this.
A great tutorial from the always excellent Ryan Walters. And yes, I learned something.
You can also get good advice at www.soundonsound.com and www.taperssection.com
I don't have an answer yet, but I have great hopes for James Miller's upcoming LUTS (vimeo.com/102504511). I saw these two articles: a workflow posted on newsshooter (goo.gl/nFkmJs); and this technical article on S-Log2, with a suggested workflow (goo.gl/ZKcE4z).
One advantage of the Nikon D5200 is that there are a lot of different affordable second-hand Nikon lenses of good quality, and Nikon lenses adapt easily to other systems. (See a review and sample video from Andre Reid: http://goo.gl/PRAc09). You'll have money left for a mic and audio, which is "half the picture". The list by D. Peterson above has all good choices.
This came at a good time. Looking forward to the constructive comments from real people.