I didn't see the use case for that machine... maybe I missed it.
I had gone down this road twice, a mini ITX box. No, scratch that, 3 times. The first was real budget, an AMD AM1 setup with the 5350 chip and MSI AM1M board. 300watt PSU (way overkill) 4 port intel server pull NIC from Amazon, 8 gigs ram. old laptop hard drive. Worked fine, but a bit slow saving changes in the GUI- anything actually that wrote to disk because of the disk. An SSD fixed that. Should have stopped there. But I ditched the little AMD that could, for a Kaby Lake I3 and Gigabyte board (H270N WIFI). It was snappier in the GUI but network wise, no difference. Not stopping there, I made that computer into my little kitchen computer as an excuse for a Pentium G 6400/Asrock B460M-ITX. Well, my mother's computer died so I repurposed that Asrock to her new desktop, and made a smart move. I got one of those Qotom-Q555G6, i5 7200, added 8 gigs ram and a 64 gig MSATA. Probably cheaper than what you are thinking about, would work as well, and with the money saved, buy a real WAP like a Ubiquity. In the end, you have a better setup- between the better WIFI and the low power silent mini PC with a very capable i5. They even have an i7 one if you need to service a small office full of people or have symmetrical gigabit that you will be maxing out constantly. So I had fallen down the rabbit hole, managed to recover, and am now in recovery and resisting the urge to waste money. Oh, put that NIC in your gaming rig or server in the home lab. Mine is in a box; I have a better one in my ESXI host... and that is another story...