Xeon build recommendations/feedback?

[Helgaiden]

Hi all. Got in on a HexOS lifetime license during the black friday deal a while ago, with the goal to eventually get my own NAS built and this was the OS I wanted to use. That said, I've done tons of Xeon based gaming PCs because I use to build alot of PC's I would flip out of old parts. Naturally, I figured I'd put that experience into components needed to build a NAS. Xeons are cheap on ebay, support ECC RAM (which is important in my considerations) that is also cheap on ebay, and stuff like that. But the more I want to do this, the more I'm concerned about power draw. For those gaming PCs i did, I didn't care that the Xeons I used were using 135-200w. But now I do care.

 So after some digging, I think the following parts might work:
- Xeon E5-2608L v3, which I've found on ebay for under $30  has a 52w TDP (the v4 is seemingly more expensive, closer to $100) Intel® Xeon® Processor E5-2608L v3 
- This C612 HKUXZR mobo from Amazon https://amzn.to/439SF7k 
- 32gb DDR4-2400 ECC ram off ebay (around $25 per 16gb stick, not bad)
- Spare GTX 1660 Super I have on hand for video output and possibly transcoding stuff if I go down that road later. I also have a spare Radeon WX5100 if thats a better choice, though I'm thinking its not. 
- HDDs I will decide later since I'm just trying to square away the mobo, cpu, ram right now

I'm also attracted to the idea of single board computer systems, of which I see alot of if i search "NAS board," but they all seem to have low performance CPUs. Though I'm unsure how an N100 would stack up against a 6c/12t Haswell Xeon at 2ghz. Seems most SBCs don't have a PCI-E slot though, and I feel like I might want that. But if its unimportant, and CPU iGPU transcoding does the trick as good as any lower-end add-in GPU, then I think I'd be fine with that route too. Just looking for some feedback or ideas. I'm a bit of a blank slate here. Thanks in advance. 

Edited 1 hour ago by Helgaiden