Seeking feedback on 4k Plex build

I've been using Unraid on an old i5 NUC for years with 20tb across 6 external USB and 1 internal SSD and HDD in the NUC. It's fine for 1080p plex but I am looking to build something for 4k support, with 2 streams at once. I want this build to be good for many years so I'm looking for expandability. 

My current usage is about 12tb but I want to upgrade my movie collection to 4k over time. I'd like to keep drive and fan noise down.

I am moving to a new home in 6 months where I plan to put in 10gb internet. 

Here's my PC part picker list:

CPU: Intel Core i7-14700K 3.4 GHz 20-Core Processor  ($579.99 @ Memory Express) 
CPU Cooler: Noctua NH-U14S 82.52 CFM CPU Cooler  ($114.99 @ Memory Express) 
Motherboard: Gigabyte Z790 AORUS ELITE AX ATX LGA1700 Motherboard  ($329.99 @ Memory Express) 
Memory: Corsair Vengeance 64 GB (2 x 32 GB) DDR5-5200 CL40 Memory  ($234.99 @ Memory Express) 
SSD: 2x Kingston NV2 2 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive  ($154.99 @ Memory Express) 
HDD Storage: 4x Seagate IronWolf NAS 12 TB 3.5" 7200 RPM Internal Hard Drive  ($274.99 @ Memory Express) 
Case: Fractal Design Meshify 2 ATX Mid Tower Case  ($209.99 @ Memory Express) 
Power Supply: Thermaltake Toughpower GF1 PE 850 W 80+ Gold Certified Fully Modular ATX Power Supply  ($149.99 @ Memory Express) 
Case Fan: Noctua S12A PWM 120 mm Fan  ($34.99 @ Memory Express) 
Case Fan: Noctua S12A PWM 120 mm Fan  ($34.99 @ Memory Express)