I have a question.
Which single coil Seymour Duncan pickups (middle and neck) would be best to combine them with Seymour Duncan Custom Custom SH-11 humbucker?
what do you want from the single coils? do you want them to sound like a vintage strat or do you want something with more power and midrange that will better match with the sh11 in the bridge? 500k pots? do you want noiseless or is a true single coil preferred?
then id look at hotter than vintage stack+ models. hot vintage stack+ or custom stack+. both should sound good with 500k pots, the vintage hot stack+ will be a bit brighter and lower output with less mids than the custom stack+