LP Series/Parallel with Spin-a-Split - pls review

[stevewf]

I was hoping the kind, wise and otherwise nice people here could offer some help with a scheme I'm thinking of trying in my LP copy.

Picture first, words next:

Above schematic: "LP SP-SaS" (Les Paul Series/Parallel with Spin-a-Split) v.1
Mote: Treble bleeds on the volume controls P1 & P2 have been omitted for simplicity

Here's what I'm hoping to get:
1- Separate volume knob for each pickup (like a std LP), but with treble bleeds
2- Master tone control knob
3- Spin-a-Split knob that splits both pickups (when the pickup is in series mode)
4- Local series/parallel switching on each pickup (coils within each pickup)
5- System series parallel switching (between the two pickups)

Here's what I'm trying to avoid:
6- Stealth mod: no difference in appearance compared to standard LP
7- Adding or subtracting lots of load compared to a standard LP

Stacking the controls:
8- The switch numbers and  pot numbers above are matched - example: P1 and S1 will be the same control (a push-pull pot).
9 - Control locations: Standard LP volume knobs (1&2); Tone (4) will be where the Treble tone usually lives; Spin-a-Split (3) where the Rhythm tone usually lives.

Some rationale for the above schematic:
10- Stealth constraint led to consolidating the Spin-a-Split onto a single knob. So it's a dual-gang, in order to keep the two pickups' circuits separate into they get mixed "downstream"
11- Sacrificing one of the traditional tone control positions meant consolidating two tone controls into one position. Since I wanted to keep the circuit loading close to a standard LP's I used two pots, which means dual gang
12- "No-load" pots for the Spin-a-Split in order to minimize extra circuit loading.

Also considering:
13- Adding a push-pull to the tone control, to select a different value tone capacitor... perhaps for only one of the pickups?
14- Breaking the Stealth decree: concentric pots for the Spin-a-Split? (this will cost a push-pull switch position)

Here's what kind of help I'm hoping for:
15- Verification: Does the schematic above achieve the goals? Anybody spot any pitfalls?
16- Component values: I'm thinking A500KΩ for: P1, P2, P4a, P4b (volumes and tones); A250KΩ-NoLoad for the Spin-a-Split pots; 33nF for both tone capacitors. Validation of my choices, or any suggestions for improvement?
17- Opinions on the choices I've mode for which controls get consolidated (always respecting the Stealth constraint)
18- Overall opinions/suggestions: is the consolidated Spin-a-Split gonna be a bust? Other ideas?

[stevewf]

Version 2. I fixed the backwards Tone control wiring.

Still hoping for verification and suggestions.



Might be more inviting if I labeled what the controls are intended to be:
S1 and S2 are local Series/Parallel switches for the neck humbucker and bridge humbucker, respectively
S3 is a system Parallel/Series switch (between the two pickups)
S4 doesn't exist
S5 is a 3-way pickup selector
P1 & P2 are volume controls for the neck and bridge pickups, respectively
P3 is a Spin-a-Split control for both humbuckers (when in local serial mode)
P4 is a master tone

Notes:
I'm anticipating the use of Push-Pull switches for S1, S2, S3. Incidentally, that's why there's no S4; I wanted to match the S numbers with their P counterparts (eg S3 is a push-pull on the P3 pot). Above I've listed the "Down" position's setting first - as pictured - "Serial/Parallel" means Down=Serial.
When S3 is up (system=serial), the 3-way switch S5 gets overridden, and all S5 positions give a single result. Dead spot avoided.
P3 has no effect on a pickup that's in local parallel mode, but does affect a series-mode pickup regardless of the other pickup's mode setting.
P3 will be No-Load.
P3 being dual-gang (and therefore on the same knob shaft), will affect both pickups simultaneously (when in local serial mode, of course).
P4 being dual-gang keeps the pickups' signals unmixed until S3/S5; will affect both pickups simultaneously.

Anyone see any disappointment headed my way?