Xbee network (multipoint to point ? )

Hello, I have few questions about Xbee.

I would like to use Xbee to transfer data from 8 pressure sensors (drived by PIC uCPU) wirelessly to PC. Is is Xbee suitable to send data (5 bytes) every 15 ms (max)?

What happend, if all sensors will send data at the same time to “host” Xbee? How will be message looks like?

What latency is between Xbees modules ?

If Xbee is suitable to do this, Could you tell me, how to set up this network quickly ? I am not native english speaker, and sometimes, datasheets are a little difficult to understand.Thank you very much.