I’d say go for it. I can attest that it’s a very polished experience and the GrapheneOS devs go at length to ensure that their work is both secure and reliable. Just make sure it’s the factory unlocked variant so you can unlock the bootloader. Any apps that require regular Android can be put on a separate phone.



No idea about Honeyhell stuff, but last time I was stuck with something that needed wifi to work, I bought a cheap used router, made an access point just for that device, and never connected the router to the internet.