I just went through getting the parts for my own NAS. All SSD was way overkill for my needs, I ended up going with spinning disks and a SLOG cache. I kept waffling about the motherboard to use but I ended up with a x470d4u motherboard with a Ryzen 7 4700GE which brings the TDP down to 35W. I wanted this to be kind of quiet. I will put a 10Gb network card on it eventually.

Maybe not THE BEST (tm) choices. But I was getting bad decision paralysis choosing parts.