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The only HSH I ever set up for myself had a Bluesbucker in the neck, an Injector neck (permanently wired as single coil) in the middle and first a Norton in the bridge, then a SD Custom 5 and finally (and my favorite in this guitar) a Mo' Joe. 500k pots (master volume, neck tone, bridge tone) and a Schaller/Eyb Megaswitch type E which gave me
1 - bridge HB
2 - split bridge neckside coil + middle, humcancelling
3 - split bridge bridgeside coil + split neck, humcancelling
4 - split neck neckside coil + middle, humcancelling
5 - neck HB
I later wired the neck tone pot as auto split for the neck humbucker so that I could also have the neck single coil (of course not humcancelling but the split Bluesbucker sounds excellent).
Very simple but still versatile set up. There is a more detailed thread on that guitar (you will find it when you search for threads I started).
Cheers Stephan