article writer

im looking for an article writer to write 5500 word article about kitchen renovation surfaces ,total of 10 articles(500 word per article) and should have good writing skills .The writing must be original content ,must have a proven track record when it comes to writing for the web.
i have rules for keyword placement in articles
1st.one target keyword per post
2nd.use keyword in title subheads ,first sentence or paragraph,and last sentence or paragraph.
3rd;use the keyword 2-3% which means about 10-15 times in a 500 word article
4th;finish on time