Adding a blog functionality to our web site

Hi, We've a small website and now we'd like to add a blog functionality. Please read carefully, we're not talking about now blog like it is used. This is more like just an one page what is easy to update, add a text content and photos. No commneting feature. Just one person will create a new posting, which is always a same structure, text and photo(s). So, not perhaps need to use any well-known blog platform, could be just a simple static page. This need to be decide before start. We have already written several postings with photos, so we can add right away a content. We need a search feature, could be like a word tag cloud or some other easy way to search content from blog posting. Also need to add a new menu item ('Blog') to the site. The blog is open for everyone, visitors and also logged-in users. Deadline for this is next Tuesday evening.