Mike,
"Active" is in the title, but good point, I didn't add and preamp specs in my OP.
Ideally a modern sounding active preamp. An active/passive switch would be cool and I am more of a 2 band EQ dude... Too many knobs/switches confuse me!
My favorite three luthiers/brands for this sort of bass are:
Alleva-Coppolo. VERY vintage sounding and feeling (e.g., low radius, very transparent/subtle/bypassable preamp, old wood, classic finish, etc., etc.).
Sadowsky. No surprises... very tight quality control. Great 'modern' take on a J with nice refinements (e.g., midget body that is routed in the NYC models for light weight, great OEM hardware, etc.), very aggressive preamp that is bypassable. The ash/maple with single coil and 60's pickup position model (basically an ash/maple vintage) is one of the most versatile J's around. They do sound like Sadowsky's though.... (this can be a good thing or a bad thing depending on how 'vintage/classic' you want in the build).
Nordstrand classic..... kind of sits between the A-C and the Sadowsky on all attributes..... not as 'old school sounding, feeling and looking' as the A-C, but more 'vintage/traditional sounding and feeling' than the Sadowsky. The one piece neck with skunk stripe is amazing, and the preamp is supposed to sound quite a bit like the transparent, subtle A-C preamp (my Nordy is passive, so can't comment directly on that).
IMO, if you are looking for a reasonably traditional sounding J with some nice modern updates an ubber quality, it would probably be the Nordy Classic for me based on delivery time/quality/price value.
IMO.... everything on you list is good in its own way.