That looks really expensive. Have you looked at the NAS Killer 4.0 or NAS Killer 4.1?
- WD Blue NVMe should be avoided. Get a refurbished enterprise NVMe instead.
- 3x8TB for $440 = $146/drive, which is higher than what the shuckable list recommends.
- Another option is getting drives from a vendor such as RhinoTech or Bitdeals
- Use this flash drive instead
- With your NAS Killer 4.0/4.1 combo, use a heatsink from this list instead.
These optimizations should save around $250-$400, depending on what options you go with. You can either save this money or put it back into more storage.