I took this photo in the dark. All lights were out. The light that the inlay has emitted illuminated the photo.

Here with artificial light. Notice the nut is not cut yet.
The process of polishing the body. You can see how I solved the issue of the control cavities not linking up: I routed a small channel underneath the neck pocket where the wires could be looped through, reaching the treble side of the neck pocket, then going to a channel that was cut underneath the top.
The preamp module forced the location of the preamp pots, in terms of sizing and geometry, so this is what it became. You can also see part of my polish process. I start with SuperAssilex blue (p600), orange (p1200), black (p3000), all dry, and then I use 3M Trizact P3000 and P8000 wet. I then use a 3M polish compound on a green polish pad and then on the yellow polish pad. First on the Rupes Bigfoot, then on the Mirka Deros. Both are excenter polish/sanding machines. The Rupes has an excentricity of 12mm, the Mirka 5mm. That prevents swirls, especially with the more abrasive polish compounds.

Saddles installed, pickup installed, neck is there, tuners are there, earth ground wire installed under the saddles... Time for strings. Let's see what this neck does under tension!
Answer: very little. That neck is stable (for now, let's give it a day or two). Normally, I'm used to hearing some creaking noises but this neck was silent as a mouse. That's good news. The Trussrod allowed for proper relief setting.

Daylight photo.
What's left to do?
Clean up the nut, it's a bit sharp at the moment.
Fix the last steps in the wiring process (jack, USB port) and check for errors (fingers crossed!!)
Backplates
Knobs
My god, I'm almost there.