I own a Ncase and follow the thread at [H], back in May of 2016 I built mine with i5 6600k, 16GB ram and GTX 1070. Seeing what the majority of users install this is actually a budget build, most were installing 6700k, 16GB and GTX 1080. There will be the switch to Coffee Lake now but the most common recent builds were 7700k, 16GB and GTX 1080 Ti. You will be seeing the same kind of builds with the Ghost. There will be occasional Ryzen and Vega builds but the majority will be Intel/nVidia and the majority of those will be 8700k, 16GB and GTX 1080 Ti. You will of course see some variety, various Ryzen 1600 up to 1800X, the occasional i5 and a few X299 builds. I have seen a very, very few people using GPUs less powerful than a GTX 1070.
You can obviously put together whatever kind of builds you want for the various categories but you should consider your target audience, very few people who buy a $200 case are doing what most would consider a "budget Build"