If each peer can retransmit to 5 other users, then a simple tree-structured fanout gets you to more than 1000 users with only 5 hops of delay. Obviously in pra

If each peer can retransmit to 5 other users, then a simple tree-structured fanout gets you to more than 1000 users with only 5 hops of delay. Obviously in practice you wouldn't get a perfectly balanced tree, but I don't see where your "50+ users" is coming from.