I didn't have anything to do with B&C but I do have Airflow A/C.
There is nothing particularly challenging about the system from a schematic point of view. I ran the wires and a couple of extras up through the windshield brace and through the overhead console to the back for the blower switch, relay, etc and it works great. Bill's kit and plans are quite complete. There was still room for two gps antenna leads and two overhead light leads in the brace.
I put my main switches/breakers per Van's original drawing on the left lower panel and put the A/C breakers, main switch, and rotary fan switch on the right side lower panel along with my SkyView breakers. Easy Peazy.