I already handle this type of writing for a few clients. I write reviews, in depth articles, blogs, and ghost write books for all of them. I can produce an excellent quality 500+ article in under an hour and return it for review. I can provide a couple of samples for you to look at. I work within the Freelancer desktop on hourly projects, so that you know your money is going only towards work that is under way. I can quickly edit, making changes in tone and direction, and return articles for final delivery in an hour.