Recommendations for SATA expansion?

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Well shit. I just realized (by about an hour of trying to figure it out) that my A380 is in a PCIe x1 slot, likely because there wasn't any other room in the current case. So I've been getting...30% performance? I was going to save re-casing for when I move next, but I'll probably push that up (might try for today) to see if I can fix my...oversights...

Well...my first thoughts were wrong. I put my NVMe drive in the correct spot and had my A380 in the correct slot (i.e., I'm a dumbass). Now I gotta figure out why lspci was reporting the card as x1 instead of x16....

Also realized I don't have enough SATA cables for my first stage...off to the store...