WordPress Plugin that will integrade a custom CDN service

We need a WordPress plugin that will do the following: Will rewrite on the fly javascript and css files. But only those files that already exist on the CDN. For this i imagine from time to time it will have to download a list of the files available from the service. (can easily provide) The user will be offered to scan his website for files that can be rewritten. After the scan he will be able to choose from the generated list the files that he wants to be downloaded from the CDN. After he chooses the files he wants and applies his settings, all these files will be automatically have their urls rewritten to point to the same files on the CDN. Additional options will provided, such as: -Move the selected js scripts to the footer -Apply defer option to selected js scripts The plugin must: -Have good design and intuitive interface -Have very small performance penalty -Good written code -Follow all security measures and precautions *In the future we plan to release the same plugins for Joomla and Drupal.