Content for website writing

I require a ghostwriter to write about 400 - 600 words for my websites, these must be content-rich with specific keywords. There will be one site per month with about 4 - 6 pages. In addition to this an e-zine article will be required to be mailed out every month. The sites will be: A) prints, tapestries, giclee prints, e-photos, digital art, collectibles, lithographs, screen-savers. B) Home health products.