This looks pretty nice actually; I'm currently using an Akasa Euler passively cooled case for a Mini-ITX system; it's smaller since it has no space for a graphics card, and I currently have it passively cooling a 45W i7-4770T, which actually runs extremely well, so I'm not certain of the need to go as high as 95W really, especially with Skylake being even more efficient still.
My main concern though would be the internal temperature; in my system I originally wanted to use an mSATA SSD, but I had to abandon it in favour of a metal-cased 2.5" SSD of the same type, as the temperature inside the case simply got too high for the mSATA drive (forcing it to throttle down to about 2mb/sec read/write!). This case looks to have the same kind of tiny side-vents that the Euler has, so I'm not sure how much stock I'd put in its ability to keep everything cool, but that said, the Euler uses almost the entire surface area of its case, not just the sides.
Also regarding the GPU, how compatible is that block really going to be? Coolers for GPUs usually try to cool more than just the actual processor, as the memory can also get pretty hot. I suppose it'd be fine for lower-powered GPUs, and you'd still have separate GPU and CPU memory which is a big advantage over integrated graphics, but I'm not sure you'd get much out of higher end cards like the R9 Nano.