I just had a quick look at this version of your diagram (I shrunk it to 1500x for convenience):
On the Neck Series/Split/Parallel mini-toggle, the 'bare' shield wire from the pickup should go direct to a ground point and instead of having a fixed ground connected to the toggle's 'white' lug it should instead come from the Neck Phase mini-toggle's 'switched negative'. That way the Neck pickup stays shielded correctly and the phase-reversal will affect both the SC and Rail coils, whereas it's currently only reversing the SC. It's probably easiest just to run a link for the switched negative from the blade's connection down to the Rail mini-toggle.
The wiring on the blade switches looks ok, and the rotaries shouldn't be a problem. So, apart from the phase reversal, I think you're good to go... just as long as you can fit everything in and handle spaghetti in your cavity.
The only other issue the leaps out is coil selection when split, and paired with other coils. That is, are the two SC's a RWRP hum-cancelling pair when combined? The Rails both currently split to North coil, from what you've indicated, so will that work with the bridge & neck combo's you're likely to use? Are you expecting to use the Rail coils split or mainly as Series/Para etc.?