12 hedge fund articles for a Native English writer

I need 12 articles, delivered at a rate of at least 4 a day. This project will only go to those with excellent English, anyone who hasn't got perfect English DO NOT WASTE MY TIME or yours. Each article should be 500 words and I have 4 keywords to target, each article will only be specific to a single keyword, therefore each keyword will have 3 articles. Each batch of articles delivered to me must be done at a rate of at least 4 a day, each batch must contain 4 articles with each of the 4 different keywords. Every article must contain the keyword 5 times, that is a rate of 1 per every 100 words. The articles can be about interesting hedge fund subjects but must also add the information relevant to the product we are promoting. The keywords are product related and the product is in the hedge fund niche. I will pay a maximum of $60, which is $5 an article. Remember do not bid if you do not have good english because I Will leave you with negative feedback and I don't have time to hold your hand an walk you through errors you have made. The winner will receive alot more jobs, so be good and efficient.