The release date of the NUC compatible version has not been announced yet, so at the moment your best option is to go with a "standard" Vahana VR setup.
Regarding the configuration you intend on buying, i would recommend a better graphics card and a less powerful processor (as Vahana VR leverages mainly the graphics memory). A setup based on a Intel Core i5 and a Geforce GTX 980 / 980 Ti or one of the GTX 10 Series would be great.
The quality of the YouTube live is mainly due the limited bandwidth encountered there, which did not enable the best streaming quality.
VideoStitch Support Team