Ghostwriting

I have written a 70ish page manuscript on communication. It outlines 18-20 tips on how to communicate well in the corporate environment and in everyday life.

I need someone to come in and add an additional fifty pages of content (at least) and edit the very rough draft and turn it into a better and more respectable manuscript that will be well easy to read and helpful to leaders who need to understand the importance of better communication. The goal will be to get rid of duplicity and add the content.