I decided on going down the SSD route, since it was reasonably cheap and because I can partition the drive for USB music playback as well.
Specifically, I looked for a SSD using 3D Nand technology after your guidance. I dont know much about this stuff apart from it being better than 2D Nand, haha. Apparently, Its supposed to operate more efficienty and has quicker read/write speeds which you mentioned would be important.
Plugged it in this evening and will update on any failures. It was super easy to set up on a Mac following the directions found on YouTube.
DIERYA K1 120GB Professional SSD...
https://www.amazon.com/dp/B07M5JSDW6?ref=ppx_pop_mob_ap_share
Side note: I dumped ~35 GB’s of mp3’s on a separate partition and didn’t realize that Tesla would go through and actually index the music after plugging it in. I guess it makes complete sense to do. It took roughly 2 minutes to index my library, but accessing any of my music while the TeslaCam is recording doesn’t seem to be a problem. Loving the setup already. Thank you to this community for the ideas!