Wait wait wait, is this one of the HSS Chapmans with the three-way toggle? If so, you could get a couple of medium-hot singles for the middle and neck and just run them in series like a humbucker. Maybe something like the FS1 or SDS-1?
Yeah, it's exactly that, the HSS with the 3 way. ML-1 with the natural Brazilian mahogany (sapele) body.
Honestly, I don't want to run two low/mid output pickups together to make one humbucker because that feels like another compromise. I'm in a mood to get around my limitations.
In fact I'm looking at replacing the 3-way switch with one of those nifty 6-way switches, and wiring it to have each of the 3 pickups solo, as well as the "in-between sounds," and using the two middle-most positions for the Middle solo and Bridge/Neck together.
There's also a push-pull switch installed, so maybe I'll try either a coil split or a series/parallel mode? I suppose we'll see.
You should try the cruiser.
Really that's not a bad option esp if I were to go with Harlow's wiring scheme. The Cruiser sounds really badass for a strat-voiced pickup. But I'm gonna go with the Chopper for the middle and Tone Zone S for the neck.
Also BTW I looked into the Bill Lawrence and Bill & Becky l500 XLs. Both of them are way too bright and top-endy for what I'm going for, though they do capture the shred-machine vibe really well. Nuno certainly could make those pickups sing. And they're affordable af. But I don't think they're for me.
Once again I value your suggestions, folks. Even if I don't go with them, there are a lot of options out there and it can become difficult to wade through it all. You've all been really helpful in feeding me info and ideas. Much appreciated!