articles written with best keywords

Hi folks. I would like to Immediately hire someone who has a proven record of article writing done with subject research and best seo keyword phrases that will help the subject be found in the search engines. These must warm up the readers so as to click thru to sign up for more info on my blog, but be desireable materials for people to read. I would like 40 articles written at 450-500 words each. Titles and articles must Must be very interesting and draw in the reader leading to the link in the bio box. These articles must pass copyscape. I will have sole copywrite ownership of all the articles, and they may not be reused by anyone eles. The writer must have perfect fluent english without grammatical errors. Please send me proof of your work and history. keywords must be approved before the articals are written. Each article must focus on only one keyword phrase in the title, in the body and [login to view URL] must be a 6-7% keyword density for that phrase. Articles must be satisfactory before approved. Articles are for [login to view URL] , so you must have experience with them, as they are very strict on their rules. The articles should be written "NOT TO SELL" but to warm up. The bio box is for the selling.I will share more about the subject if chosen. You Must keep in communication, and have means of staying in touch throughout the project for any questions. I look forward to working with you, and If I am pleased with the work, I will be interested in working with you again. Thanks.