I’ve seen some resources floating around including, if I’m not mistaken, a spreadsheet that adds up all the costs of everything you need.
Basically I want to create an internet coop that’s resistant to internet shutdowns and can keep running in situations where the wider internet is shut down but we still have electricity.
Resistant to shutdowns and ISP sadly don’t go well together. The state will undoubtedly have the resources to find and shut down your infrastructure just like anyone else’s.
There’s merit in decentralised networking, such as LoRA or other long-range radio standards, but they likely won’t have appeal until they’re necessary. As such, your best customers will be clandestine or oppositional orgs; hardly a lucrative market.
Not to say don’t bother, just know that the value of any sort of venture like a cooperative is the social relations to your labour, which is something that a capitalist cannot simply switch off with their command to the state.