Dear Sir,
Your project seems to be huge, and oriented towards customers that search for the best.
There's a common error that people are making when hiring a writer ; they pick the cheapest, thinking it's something anyone can do. Being a writer is not like being a garbage collector.
First of all, you need lots of experience. Younger, I used to spend hours every day just because it was my passion, and it leaded me to become what I became. It leaded me to work for the associations / corporations I worked for. That's the real experience you need, not some random third world guy that will tell you how much he is a platinum Ezine writer, which is equal to nothing in terms of experience.
Secondly, you want someone that shares the same culture that your customers. Because by sharing the same interests and by living in the same condition, you write something that is more relevant to their ears.
Last but not least, you need someone that is dedicated to your project and organized. By hiring me, you hire one guy, not a company hidden under a fake identity which will give you different interlocutor every time and a melting pot article. You need and want consistancy and professionalism.
About my skills, I can type about ten thousand words per 8 hours of work if I have to do research on the subject. If there's none (or basic research), you can add between 20-40%.
About my offer, it's 4€ per hour. The amount of time depends on what you need.
Best regards,
Arthur