I dunno, I was up and running in five minutes. You pick an instance, you sign up, you verify the email, and you’re good to go. What server doesn’t matter much, barring it closing unexpectedly and without warning. There’s not enough users to need more than a handful.
If you don’t mind about the local timeline, or that the main language is different or that other users might get it defederated then your approach will work.
I feel like finding a good instance in the fediverse (that’s accepting users) is always a nightmare.
That being said, I’ve been happy with the vibes on lemmy.blahaj.zone and they have a calckey/firefish instance (that’s the main blahaj.zone). But it’s not strictly general-purpose.