Content Building and SEO for weight loss site

Hi, I've a few month old weight loss wwebsite which i started up with a great domain name. [login to view URL] I've no time to update content and do SEO for this website of mine. I'm looking for a reliable person to add contents and do SEO for this website over a 2-3 months period. Requirement 1) Original content for website 8-10 post every month. 2) SEO white hat techniques only Aim is to for keyword "how fast to lose weight" in top 10 results of google. Please quote base on who much you'll charge over the whole project of 2-3 months. If well done, will renew the employment for next 1 year. Please quote only if you can commit to doing this well and properly. Payment is 10% at end of 2 month and full payement when keyword stays in top 10 google results for at least 2 weeks.