dennis@home wrote:

I think a 32G SD card and a couple of 64G sticks will be fine.
The USB sticks will be much quicker than the SD card so I may just use
the sticks.

I think you'll need a small SD card to boot it, clearly it doesn't have
a BIOS to allow "conventional" USB booting, AIUI it's the GPU that
performs the bootstrap from SD and then hands over to the ARM ...