If I had the time, I'd love to build a Supermicro system like you've described. I'm playing with the Plex DVR beta (already had a SiliconDust HDHomeRun) and need something with more horsepower for transcoding.
This morning I ordered a HPE ProLiant ML10 Gen 9 for $200+tax+shipping
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5038747&CatId=329
It lacks some features, like an iLO and needs a special dongle for video (has display ports)
http://homeservershow.com/forums/index.php?/topic/11012-hpe-proliant-ml10-gen9/?p=120983
And, once the warranty expires, you can't download drivers, etc. from HP.
But, the price was very appealing.
[QUOTE="Digitaldreams, post: 354599, member: 71527"
SUPERMICRO X11SSM-F-B Supermicro X11SSM-F-B LGA1151 Intel C236 DDR4 SATA3 and USB3.0 V and 2GbE MicroATX Motherboard
Intel Core i3-6100 3M 3.7 GHz LGA 1151 BX80662I36100 Desktop Processor