With all the RGB detail you will end up with more subtle colors.

It seems more tempting to get a used Arri Alexa for 10k... You get a more user-friendly interface, and an image quality that can rival shooting on film. It's the digital camera of choice, standardly used on films, TV shows, and commercials (and now I sound like an ad too)

It's a resource you have to pay for but I can recommend "Story Maps" as a good in-depth look at beats and how they keep the story engine running. It's uncanny how every film I watch follows the formula for beats and even TV shows, when there is a continuous story, like Game of Thrones. Very useful stuff to know.

I can see the value of going over the script with an editor. If scenes seem disjointed and are not editing smoothly together, it may be a script issue, and an editor can find ways to get transitions in the script (in the editing room may be too late). A good example is "Game of Thrones" with its many storylines interwoven; you see very strong transitions in the script. Often the character or situation in the next scene is mentioned by characters in the preceding scene, helping a smooth edit between scenes.

And just in time for NAB 2017: "Blackmagic buys Arri"... Well, we can dream!

A high aperture will not give you the out-of-focus areas. If you want to create shallow focus with existing footage, you can create a depth map of your shot in Photoshop, import that map into After Effects, and then use a blur filter to designate out of focus areas. You will likely need to create a mask around the actors. I used this effect to improve the look of a shot when the background was too static. Worth Googling how to do.