I have made many command-line applications, and I've done plenty of work with RSS and other syndication formats. I've also made my own RSS reader, which was used for various internal notification purposes at my startup. I know for a fact that I can make you a full-featured script that meets all your requirements. I'd love to start as soon as possible, since I have very few jobs going on at the moment and would be able to focus fully on this project. Contact me if you have any further questions.