It may be "consumer" parts but that line is blurring. The i7 6700K in many reapects is more suitable for video editing than the equivalent Xeon chip, especially when you consider Intel's Quicksync technology in their latest CPUs.
You may not be aware that Apple has a habit of calling most of their machines "Pro" including those with *gasp* consumer i7 CPUs. Therefore, calling this a "Hackintosh Pro" is not a huge stretch.
Also, more powerful single GPU systems are the future and this hackintosh build will easily outperform the (2013) Apple "Mac Pro".
The problem is not that the vast majority of audio speakers have limited range. The problem is that audio mixers no longer control the levels. What works in the first weeks of a film in the theater does not work anywhere else. With so many layers of sounds, very often the dialog track is lower than the sound effects. If a viewer has to touch the volume buttons between loud and really quiet scenes, they are drawn out of the film.