this is only one of many ways to skin it, but may help get you started. you could disengage no. 1 and still blend your clean sound into 2nd drive. stomping on the blend switch will engage the 2nd drive. you have some design choices to make concerning the ‘balance’ knob on the blend. you might set that to 12 o-clock with an internal trim pot since the 2nd drive has its own volume knob. you may also wire power and ground in a million different ways, it does not necessarily need to come from the stomp switch boards.
