I don't think the chances of finding supplies or survivors would be worth the fuel expenditure of the trip. I think at least part of the survivors will be staying in the colony, since Datu is busy working his mechanical voodoo to get the place back up to snuff. If Michael ends up in any sort of romantic relationship again, I think it would be with Riley. They are both going to be grieving over Angel, and they are already close, so it wouldn't be much of a stretch.