Content writer for PHP and OpenSource development company

I have a Website Development company and the the website is pending to be finished mostly because of the content unavailability. I have created a list of PHP applications, Shopping Carts, CMS, Payment Gateways, and other softwares that I would like to have a independent page for each of them with around 400 words of content on each page. I have listed around 12 categories and each category has approximately 4 listings. for eg: CMS Drupal Wordpress Custom CMS Shopping Cart / ecommerce website Interspire ZenCart OpenCart Magento OS Commerce Customised Email Marketing Interspire email marketing software/setup Customizes email marketing concepts I will share the complete list with the shortlisted content writers. You need to be able to understand the above terminologies/Concepts too write on them. Please make sure that you understand the concept of getting content written : 1) SEO purposes (i will give the keywords to be used) 2) Sales Pitch - I would the website viewer to get "impressed" with the content in order to fill in the inquiry or place an order with us. Please feel free to ask questions. Thanks!