Or just push the easy button and get an X10SDV micro atx board with a sas hba built in and 10gbe.
Example
NOTE: X10SDV boards come in a variety of core counts… from 2 - 16. And a variety of add on features, ie you can get 2x10gbe + 2x1gba + SAS etc. All built into the board…
And then a x16 fully bifurcatable PCIe slot… and others on the non miniITX boards.
One of the major caveats is no iGPU for transcoding.