Best Article Writer team needed

Greetings! I am in search of finding a best article writing team to help me in my SEO campaign for my clients. I will need about 1000-1500 articles of 300-500 words each month. The only think i want from my article team will be originality and quality of content because this is all that matters in SEO. I am willing to pay much higher than the Freelancer rates. i will be willing to pay something between $6-$15 depending upon the quality and length of the articles. Most of the articles that i will need will be from weigh loss niche so writer with experience in this niche will be preferred. Since i am looking for the best guys over here so i will require every applicant to write me couple of sample articles of 300-400 words each on the weight loss niche topics. Some examples of topics can be: fast weight lose guide fast weight loss tips vinegar weight loss quick weight loss fast and healthy weight loss easy and healthy weight loss Why someone need a personalized weight loss plan . . . . . . The list goes on, You can make up your on topics as well but make sure that you rotate around the same topic of "Fast Weight Loss" The test articles must have to be original and unique and must pass copyscape and google search for plagiarism check. I will select a team or few individuals to make my own article writer team. I look forward to see your samples. Just one last thing you will be paid for samples :) (if your article get selected). Payment will be made by paypal or GAF whatever you want.