60 unique SEO article of 500 words in different niche

I need 60 articles of 500 words in the cell phone tracking niche, I want the articles to be well researched and write by a native english speaker. Here are the skills requested 1)Write well structured article 2)Be available for comunication by email or skype 3)PERFECT grammar 4)Impeccable English writing skills 5)100% Original articles , must pass Copyscape 6) Keyword would be provided for each batch of different articles. 7) Must know SEO with keyword density and LSI 8) Attach your sample and resume with your bid.