article re-writings

I have several articles that needs to be rewritten. On average, each article is approx. 400 words long. Each article has a certain amount of keywords in them. Those keywords need to be in the articles. The articles should be rewritten with the following: -the headline be re-written to include the keyword first -the article be completely re-written not just words replace here and there. -the re-writes be roughly the same number of words and keyword density. -the writer use conversational style writing not technically correct english. -the project be done in 5 days. -to provide examples of their work showing both the original and re-written articles. I expect to have approx. 10 articles per day to be done. That may increase over a period of time.