Well is interesting know what you are doing, maybe i test it in the future.

To "preload" the files in memory I actually use the BSGSD  (bsgs daemon)


https://github.com/albertobsd/keyhunt/blob/main/BSGSD.md

It is a keyhunt server that only run BSGS for some small ranges like 66 bits it listen in a TCP socket on some PORT for incoming jobs, this is a public key and range to scan it only returns the private key if that was found or "404 NOT FOUND", check the link above for more information.