I don't quite see why you need all those "master" switches...you have a Master power switch, a "Main" power switch, an Avionics master, a switch for every avionics box, two nav light switchs and two landing light switches, etc.
If you're using Skyview, you don't even need an avionics master, let alone all those others for each radio, XPDR, A/P, etc., as they're all controlled through SV.