I would too.
But if I were in the @bassmansam position I would spend the cash secondhand and buy a secondhand ACG and a Secondhand Shuker and then have more concrete ideas to base an opinion on... and then sell them to fund the custom build if that's the thing. 24fret 5 string Jazz though... It depends how traditional it needs to sound? I'm not sure with the brief of instrument, I would have ended up narrowing it down to ACG or Shuker.