JVBs Cluster

Hi everybody,
I work for a big organization with branches in different towns.
I’m interested in the jitsi-meet configuration with a cluster of jvbs.
But I’m wondering if it’s better to distribute jvbs geografically or maintain them in a single datacenter. Have you any advice?
Is it possible to make jicofo apply an IP based policy (if the room is created by the host_IP x coming from town z I want to use jvb z1)?
Last question: what about firewall rules? Every jvb has to been accessible through 443/TCP 4443/TCP and 10000/udp?
Thank you for your time.
I’m very grateful to this community.