We have two 10S headsets, an SM10 and a Garmin 595LM on the way. I'd like to be able to make/receive calls through the GPS, listen to music from the GPS and use the intercom function to talk to my passenger. I'd like the Zumo to interrupt everything to give directions and I'd like my passenger to also be able to hear the GPS directions. I have the bike intercom cord which connects to the SM10 and would also like to be able to listen to the motorcycle radio. Is this possible with what I have? How do I do it?