Article Rewriter

I have 8 articles. I need each article rewritten to appear unique and pass copyscape. The rewritten article must make sense and be grammatically accurate. I will send the keyword(s) that the article should optimized for (roughly 2-3% density). The articles word count: 1) 1000 2) 300 3) 400 4) 500 5) 1000 6) 500 7) 600 8) 650? (average 600-650 words) I am looking for someone that can quickly rewrite an article and expect low bids due to the fact that there will be no additional research needed. Preference will be given to native/fluent English speakers. This is a test project. Should the provider be successful in producing high quality rewrites, I will look to form a long-term partnership.