This doesn't actually answer the question about how hard it would be. What's the specific level of effort required, and some amount of why so people can learn from your experience.
> We basically have to get as much done on a 3/4 month timeline as possible and it isn’t a priority like saving content or refunding gift cards is. Shutting down is a lot of work.
I'd rather have a working game then a refund of a gift card. Including if that means I have to stand up my own servers.
Priorities I guess