I think it may help if you take a look at my post on how to add an xBee ZB radio to SmartThings here. Things you should pay attention to are the type of xBee radio you have, make sure your security settings are set as I laid out, and note you can only have one coordinator on an ZigBee network and it has to be the SmartThings hub. So right off the bat your configuration is going to have problems since you are trying to bring up your radio as a coordinator, it has to be configured as a router or an end device.
Just an FYI this is not a trivial process if you truly want to do this it is going to take some research.