Hi there,
First of all, your time frame works fine for me, and I have no issue working on a chapter-by-chapter basis. I can work around you, really.
About me: I'm an ex-lecturer in English, with a Master's in Linguistics and 10 years' experience as a freelance academic editor. In my university role, I was head of the International Student Department, and therefore responsible for linguistic and structural quality of submitted proposals, journal articles and theses by students with English as a second language. I also run an SME as a company director, so your topic is of personal interest to me.
I provide a comprehensive editing service that comprises thorough grammatical and lexical checks as well as flow, consistency, layout, style and tone. I also check citations, footnotes and bibliographies on request, having worked with and taught Harvard, APA, Chicago and MHRA formats. My edits are in MS Word with all changes tracked, and I make myself available for the duration of any project to answer questions and consult on the project as a whole.
Get in touch to discuss the project further - I'm more than happy to provide a sample edit, of course.
Many Thanks,
Simon Richardson