The red arrows indicate where the upcurve for a neck through body needs to be added. Your drawing will work fine for a set neck design, but the labor involved in making a continuous curve with sharp angles by the neck on a neck through is very high.
We made a neck through Epic as a custom order. From the front, you couldn't tell at all (the bookmatch to center made it work) it was a neck through. Kris told me after he carved that bass I better charge a lot next time, as it was very demanding of his time. The quick sketch above ceratinly will need some more work (blending the curves better, making the bottom a mirror image). I wasn't excited by the lower horn in your drawing - it certainly needs to be wider. The roundover brings the top surface in 3/4 of an inch, and that horn looks narrow enough that it may overlap. If you're interested in having the lower horn pointing outward as in your original drawing, I suggest we put more pressure on the upper part of the curve, to echo the scroll and the give it the "meat" it will need to survive the roundover. The drawing below also adds some substance above the side omega.
If either of these general ideas are very close, let me know and Kris and I will review the design together and make the final drawings. Also, the scrolled horn was not part of the quote for this bass.
