Are you using kiwix server or one of the clients?
So now instead of just Kiwix; I also have my handheld radio programming software (CHIRP), ATAK Server, microcontroller dev environment, copy of Collapse OS, etc.
I have had a similar project set bouncing around in my head. I have some LilyGo LoRa radios arriving soon to see how well Meshtastic works as an alternative to internet.