How it plays is what's important! I personally think that this is what is so cool about this whole program- being able to make a viable instrument for minimal dige, and being able to afford making mistakes- the source of all real learning. But no matter what, I think you're on the right track with the off-angle neck, at least for stand-up, versus sit-down playing.
I have this personal love affair with Dan Electro tubular pickups, and in my spare time I'm working on a CB-ish box guitar bass with a DE pickup. I just might tweak it like you did- it's a brilliant idea.
On another note: my congrats to you and, of course, your hubby, on the recent marriage!
I'm digging the geometry on your CBG- the ergometrics seem to totally vibe with the small size of all CBGs, and might solve playing problems I've encountered- especially standing up, with my habitual hip-level playing position from old PR bass days. I'm having typical blog meltdown problems trying to get an enlargement of the photo you posted