I sincerely DO NOT believe this would be the way for you to go. Keep in mind that DonM and many others using this system leave their equipment set up at the same location for several days, and sometimes weeks at a time. They're not setting up and tearing down two to three times a day, 5 to 7 days a week. Those of us that work the NH and retirement community circuits frequently do doubles, some triples, and the most effective tool in our inventory is the arranger keyboard where everything is contained within a single unit. A module, controller keyboard and the associated wiring just doesn't make good sense for you, or me.
Good Luck,
Gary