Why not just use a blog script like WordPress, installed on your server, and therefore on your domain (i.e.
www.lorshasworld.com/blog/) then all you have to do is add your blog entries and it creates the RSS feed for you. Plus you'll have the all the search engine and other benifits of using a bonified blog script.
Customizing the blog theme to match the look of your site wouldn't be difficult, and I'm sure you could easily find someone able to do that for a nominal fee if you didn't want to try it yourself.