content writing only FOR US providers

I require US based writers who understand small & medium size business mentality, the use of online resources for researching in the USA etc. I need 11 articles 500-600 words. I will give the title of each article in the PM for anyone that is requesting it. I also need content (around 200 words per page) to highly target specific keywords which i will also give in the PM. there are 12 keywords that we will target, so 12 x 200-250 content. one for each keyword. it's as simple as that. 11 x 500-600 articles 12 x 200-250 landing pages All original content. copyscape tested. I have full rights to the content once the project concludes etc etc etc. If you're a writer you know all the details. While everyone says there's a "long term relationship possibility and you should take this into account", this is really the case here. We need someone to tweet, blog and provide content on a continuous basis. the more you get to know the subject the easier it will be for you and for us. You MUST have english as your first language. Articles to be written with American audience in mind. Short sentences. average 3 sentences per paragraph. Please lets not waste each others time :) Good luck.