Why not go the nostr.wine route and require payment? You'll be helping the market with price discovery and enable your operation to scale. It's an essential step for Nostr to mature. If I were you I'd start at what seems high since there's little competition. Say 33k ($30) a month.
As soon as you start charging, people have expectations around uptime and whatnot
That's a good thing because it helps us get to the truth of the matter. We should not gaslight ourselves thinking we have a reliable system when it requires not only passion but charity. v4v is an aesthetic but reality operates on mass (users) and energy (money).
BlueSky runs on woke fantasy and VC funding. Nostr runs on passion and self-funding. Nostr and truth win when we know the costs and dutifully pay them. nostr:nevent1qvzqqqqqqypzpckv7l8jqspl8u4y54dn9rcduwlrs4v2040nxce0m2h0cunvrj8tqqsrx9pcpt5teggh7tjhusl6j709r0zm33g8gmd22cfajr6tldryzwquf0e6t