wow that top sketch looks like a bowl of spaghetti mate ! hahah
I have never heard of a bass cut switch, not sure why you would want one, I'd swap that for a kill switch if the owner agrees
EDIT just saw the pic of the pickguard, wow pretty involved wiring. It actually looks pretty neat. So is the humbucker split with a push pull pot ? can see 4 wires coming from it.
Should be able to get over 20 different sounds with the amount of configurations, have you worked out the total number Doc ?
70 posts to overlord I reckon this thread will have you there in no time !