When you say it’s going to ‘take forever’ how long are we talking? Can you try a small batch and see how long it takes? If you really are only doing this every 5 years or so and don’t want to spend any money then the setup you have may be your best option.

If you want to spend $10 or so you could buy a cat6 Ethernet cable (and you may also need to buy a dongle for the laptop). The transfer would take a few hours.

Depending on your internet speed you could also sign up for a single month of Dropbox and do it that way (again, about $10).

For the quickest (and most expensive way) you could purchase an external nvme/SSD which would do the job in a few minutes. Couple hundred dollars but then you’ve got a very useful device that you can use in future.

Until I get my waterproof VR headset