Good to hear, but this sounds like an adhoc gossip network. We don't need to reinvent overlay networks, we know that DHTs scale, gossip doesn't. Gossip only work when you are already cursed with the need to replicate a dataset in full.. for everything else, sharding aka DHTs are the optimal solution.
The 200 relays you reach, are not likely to be the ones I read from, and if it is likely, then it means these relays are under too much stress and they will churn or drop your data soon.
Nostr is good enough for sure, but physics is physics, and the Web needs a DHT or ICANN... these are the choices.