It should definitely be possible to adapt this wiring using the humbuckers in humbucking mode (coils wired in series, e.g. red = hot, black = not, white & green soldered together and taped). Then you could add further switches to coil split or series/parallel the humbuckers.
I have not prototyped this wiring (not even with 3 single coils) so I cannot comment on the results.
Cheers Stephan