I was in school right before the shift to non linear editing, so I learned a bunch of skills that promptly because useless, and basically had to teach myself the AVID. Editing 16mm film on a Moviola was pure torture. 35mm film is thicker and can endure the abuse of the machines, but 16mm was forever getting sprocket holes torn up and shredded.
Yeah, no. I make a living with my machine, doing pro work for many, many years. My hack is rock solid stable, less crash prone that the real macs I have bought previously. This is because it takes work to get a system that will boot at all. Don't regret it in the least. I got tired of buying a whole new machine every few years. Now I can just upgrade the components I need. So the savings go into the thousands over time. And hey, I have a separate internal drive I use to boot into windows too.
Building the mac is the relatively easy part. It's getting the software to work smoothly and without bugs that is the challenge with hacks, and OS updates seem to break things. However, once you got your system all tweaked, I've found the hack to be even more reliable and less crash prone than official mac hardware. Nvidia released drivers for the newer pascal cards so you can probably get more bang for your buck with a newer, cheaper card than the 970 or 980.
I think most movies are a combination of both story and plot, one just usually dominates the other, depending on genre and filmmaker. Only filmmakers on the far fringes, like Terrence Malick, can you say makes films with virtually no plot whatsoever. I'm not sure it's possible though to make something with a plot and no story.
For me, a cinematic image is one that communicates an idea in visual terms. It isn't just passively recording actors going about their business. It communicates a concept/emotion/mood through framing, lens choice, movement and lighting which re-inforces, comments on or contradicts what is happening on screen.
I saw no performance boost on the free version. 4k h.264 from the GH4 handle perfectly on my system with FCPX and Premiere with no transcoding. DaVinci is choppy, as it was on 12.5.