Question Asus ROG CROSSHAIR X870E HERO PCIe lanes and NVMe's

[Toadyfrawg]

So I am starting a new build for a RTX 5080 card. I bought the X870E + AMD 9800x3d combo from Newegg and I am trying to make sure I have the NVMe situation correct.
I am wanting to run the 5080 with all 16 lanes and at least one Nvme 5.0 if not two. Do I have the gist of it or no. Also I could use a good case recommendation to utilize all the USB headers this mobo has.

(From the mobo manual)
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
When M.2_3 are enabled, PCIEX16_1 will run x8, and PCIEX16_2 will run x4.
When M.2_2 and M.2_3 are enabled simultaneously, PCIEX16_2 will be disabled.**
When M.2_3 are enabled, PCIEX16_1 will run x8, and PCIEX16_2 will run x4, M.2_2 will be disabled