I would also recommend you contact Lee Garver of GMW Guitarworks. His SS model can be had with the specs you wrote at what I'm certain would be a less expensive price. And quality wise, the custom GMW guitars I've played have easily matched any of the custom shop Jackson guitars I've played.
If fact, I had wanted to begin the process of a Masterbuilt Jackson last year, but they're not taking any orders. I went to Lee and we spoke back and forth. What I want is pretty outside the box and Lee was direct with some of what I was after, but willing to build the guitar. After some further thought on my part, I wanted to go with a different direction on the guitar overall and first experiment with modding an existing guitar.
I feel your pain as I've wanted a custom shop Jackson built specifically for myself for over 20 years. If I were wanting a custom Jackson, ESP, or a guitar that is heavily inspired by their designs now though, GMW is exactly where I'd go.
