XBee 868 Scalability

Hi all,

Two questions about the XBee Pro-868 product:

1- Can we have a deployment whereby more than one coordinators are used, and the nodes intelligently choose the coordinator to communicate with based on proximity? (The goal is to reduce load in the network and make it more scalable)

2- Are you aware of any traffic/scalability testing on this module as far as the maximum number of nodes that can communicate with a single coordinator in a point-to-multipoint setting? My project requires 200 nodes to communicate with the coordinator and send location data (Lat/Long) information every 10 seconds, and I am not sure if the advertised bit rate of 25kbps is sufficient to handle this many nodes at the same time.

Your early response would be appreciated.