Hi Mark.
Having had my hands on your bass, I've got to say I thought it was a decent example and therefore very saleable. Like others have said though, now is not a brilliant time to sell, if you want to get a good return.
If it's not pleasing you, move it on, life is too short to be playing an instrument that isn't quite doing it for you, when there are so many other good ones out there.
Again, like others have said, put the original neck back on. Keep the vintage one for another project or move it on.
Good luck and enjoy the search for the right one. It might take a while and you could go through a few more before you get there but that's all part of the fun.