Aeroplane History Book Editing & Ghostwriting

I'm looking for an editor with both proofreading and content editing skills for the first half of my non-fiction book about the history of aeroplanes. The book is half finished at this point. The style should be somewhat conversational, but still focused and factual. There is also the potential for a long-term engagement to help ghostwrite portions of the remaining book.

Ideal skills and experience:
- Previous editing experience, especially with non-fiction and storytelling styles
- Strong proofreading skills for grammar and punctuation
- Excellent content editing skills for structure and flow
- Ability to adapt to a preferred style
- Ghostwriting experience
- Passion for or knowledge about aeroplanes would be a plus