Also, do you want it to sound like HSH or HHH?
If you want single coil tones out of it I would suggest Trilogy Suite. I has more of that snap, quack, and even a bit of P90 growl, while I think that where the Sinner shines is to give humbucker-rivaling tones whenever humbucker routes are not available. You already have humbucker tones covered with the Aftermaths, so...
As for volume, I have a middle Trilogy Suite paired with a bridge custom made pickup (think something Holydiver-ish but with A8 magnet) and there is a volume drop going to the TS. However, that's what I expect when switching from a hot bridge humbucker to a middle single coil, so works great for me. With the bridge humbucker split, the TS overpowers it by a bit, but still work very good together.
As for switching, the sky is the limit. I have 9 tones with just a 5 way switch and a single push-pull volume pot:
- Full bridge humbucker
- Full bridge humbucker + middle single coil in parallel
- Middle single coil
- Full neck humbucker + middle single coil in parallel
- Full neck humbucker
The push pull splits the humbuckers to the inside coil on positions 1, 2, 4 and 5.
Then... there is something like the Tosin Abasi wiring if you don't use the single coil much by itself but want it to help the humbuckers' split modes:
- Full bridge humbucker
- Bridge inside coil in parallel with middle single coil
- Full bridge and neck humbuckers (LP middle position style)
- Neck outside coil in parallel with middle single coil
- Full neck humbucker
Then a mini-switch or push-pull splits the humbuckers on positions 1 and 5, and position 3 becomes inside coils in parallel (Petrucci style). I would suggest an Irish Tour instead for this type of wiring, since it never has to work with the full humbuckers and to further bring out the strat tones.
It's a bit overwelming, all the possibilities.