This is the kind of content that makes me wish Lemmy had a feature for following users. Thank you!

I’m not sure of the availability guarantees, but Oracle and other cloud services have free tiers for low CPU/RAM/storage needs. If the availability guarantees are there, this could be an option. It works fine for FoundryVTT and hasn’t cost me anything for the last couple years, and I don’t imagine your projected needs would outstrip Foundry’s.