If you haven't seen this thread yet...http://www.voodoolab.com/forum/viewtopic.php?f=9&t=2688
...you should check it out. It explains how you can upload an Eleven Rack w/Expansion Pack memory dump to your GCP, which would be an excellent starting point for what you are trying to accomplish.
Worst case scenario, you could do a memory dump of your existing GCX settings. Then, depending on how you want to use your GCX, you could just load the appropriate configuration and be good to go. Better to spend five minutes swapping memory dumps on your GCPro than reprogramming it each time.