Recommendations on Fractal Design Meshify 2XL for doing BOINC

[GWG007]

I’d like to have your views on my building a computer specifically for running BOINC 34/7/365.

This is my intended setup:

F.D. Meshify 2XL Case
AMD Ryzen 9 5950X CPU
ASUS ROG Crosshair VIII w/Wi-Fi motherboard
[2] EVGA RTX-2070Super & [1] EVGA RTX-3080 (10GB) GPUs (3 all together)
G.Skill DDR4-3800 CL14 DRAM
Samsung 970 EVO Plus 1TB M.2 NVMe SSD
SAMSUNG 870 EVO Series 2.5" 2TB SATA III SSD
WD Black 2TB HDD
EVGA SuperNOVA 1600 T2, 80+ Titanium 1600W PSU
Optimus Foundation CPU Water Block for AMD AM4
EKWB EK-XTOP Revo Dual D5 PWM Serial water pump
EKWB Classic GPU Water Blocks (w/backplates) for all 3 GPUs
EKWB [1ea] EK-Quantum Surface X420M & X360M Rads in Push/Pull w/Noctua fans

My questions are:

1. Your view on my build.
2. Would I be better off with a different case?
3. What kind of wall amperage can I expect with this setup?

[Jrd680]

The case should be fine. I’d confirm all those graphics cards can be used together.