comment box website

I need someone to create and do everything involed with getting this site up and running on a webhost like godaddy or whatever is easy for you. i know the domain name i want, and it is available to buy but i wont buy it till i get someone to do this for me and they tell me what site i should buy it from and what hosting plan to use. This site will only be for people to post their comments on for now. In the future i may want to add avertising ads and some more content. The new comments should be posted at the top of the comment area. i will need to know how to edit comments if i don't like them. Also once a comment is submitted it should post without a page reload. (Just like [login to view URL] or youtubes comment boxes). I put together a picture of what i want the site to look like. All offers will be considered