Copywriting and product description

We need 20 quality articles of at least 500 words all on the same topic ( breast enhancers and breast enhancement). The articles will be going on a site that SELLS breast enhancers and should appeal to different sections of the potential market. Such as Cross Dressers, Post Mastectomy Patients, girls with confidence problems due to breast size, this will require an element of research. The articles must me geared toward selling, not be too aggresive and be keyword rich and SEO optimized. 10% or more of each article should contain specific keywords provided. Articles must be guaranteed original content and will be checked for plagiarism and must be written in english ( UK). All articles become our property at end of project and should be publishable by us with no fear of infringing on copyright of others. Portfolio of past work should be submitted and any ideas that you think may be of benifit would assist. In addition to the above articles we need 10 cleverly written product descriptions ( as each product is basicly the same but a different size or shape) This may be an on going project for other sites too.