Bob,

GWS do a switch that is designed to turn their gyro on/off in flight, don't know is that can be used with other functions.

I am not sure I understand how these various functions can be operated through one channel, surely your bombs would drop, lights light and brakes come on all at the same time? You could achieve the same thing with 'Y' Leads.

Maybe two receivers is the answer, but how you set these up I don't know, I have never run out of channels myself.

Maybe worth a chat with SM Services here in the UK (+44 1234 751095), they do various electronic gadgets and the guy there is very helpful and knows his stuff.

Best of luck

Simon.