125 Unique Articles required for various small information websites

I am seeking a copywriter to provide 125 interesting, informative, good quality & plain English articles for small websites of various niches. 125 articles are required in total. Each article must be 500 words or more. I have over 100 domain names which I would like to develop into small websites with up to 10 pages each. The successful freelancer will be able to select which domains/ websites they would like to focus their writing efforts from a list which will be provided. The successful freelancer will also be able to choose how many articles they would like to write for each domain/ website (between 1 and 10 articles per website, 125 articles total). The subject of each article must be relevant to the domain name. The subject (and one of the keywords) of the first article (which will be the article which appears on the homepage of the website) must be an EXACT match to the domain name. The subject of the other articles must be RELEVANT to the domain name and should contain some keywords present in the domain name and also needs to be relevant to the rest of the website. Some basic keyword research will need to be undertaken by the Freelancer prior to selecting the subjects of the subsidiary articles (that is, all the articles apart from the home page articles which are already pre-determined). The Freelancer will be able to choose the topics of the subsidiary articles subject to the criteria outlined within the project description and my approval. Each article must be ORIGINAL and must pass copyscape. We will not accept low quality work. We want well researched articles that we can post on our websites with minimal editing requirements. We have a zero tolerance for Plagiarism, and UNDER NO CIRCUMSTANCES WILL WE ACCEPT ARTICLES CREATED WITH ARTICLE SPINNING SOFTWARE. Bids from non-native English writers will be considered. We do not necessarily expect for all articles to be completely free of grammatical errors, however we do expect the articles to be very well written so they only require minimal editing. Cost in an important factor - I expect high quality work for a good price. We will use a milestone system to ensure that we are happy with the quality of the articles. If an article is of such low quality that it requires major editing or it cannot be published without being re-written then we will not release payment until the article is deemed acceptable for publishing. Experience in SEO is considered an advantage, however not essential because all articles are submitted for SEO analysis prior to posting on the website. Completion of this project may result in regular, ongoing work for the right person.