In a Strat with a Lil Screamin Demon in the bridge and Quarter Pound RW/RP in middle and Quarter Pound in the neck, will the Demon need to be split for hum-cancelling when combined with the middle pickup?
Yes, you would but I'm not sure which coil you'd need to split to. I think the standard black/white coil will hum cancel, and if that doesn't work the red/green coil will.
So if I don't split the Demon, then it will just be full Demon with the middle single together, but will that sound better and more balanced than having the Demon split with it?
Great. Thanks! I've got the Lil Demon already in the guitar, just waiting on a couple Custom Shop QPs, but I've never done my own wiring before. It seems like it should be pretty straightforward, though.