Luke, as an intermediate step before writing a book you should write a book chapter for Springer's upcoming edited volume on the Singularity Hypothesis. http://singularityhypothesis.blogspot.com/p/about-singularity-hypothesis.html I'm not sure how biased they are against non-academics... probably depends on how many submissions they get.

Maybe email Louie and me and we can brainstorm about topics; meta-ethics might not be the best thing compared to something like making an argument about how we need to solve all of philosophy in order to safely build AI.