Article Writer for IT company

I need 50 articles - MUST BE SEO oriented: BID for 50 Articles as describe above , look at link given below [login to view URL] username: newdesign password: VPK*$3}xe*Z^ # A certain keyword for each article. # 3% keyword density. # The keyword must appear in the first and last paragraph of the article. # 500 words per article. # All articles must be 100% original and pass Copyscape check. # Each article must have a headline containing the keyword + 3-4 subtitles within the article's content, also containing the keyword. The articles subject is power sport products & venidng products, we will give you the keywords to write about once you win the bid.