Use Wordpress for its gorgeous back-end.
This plugin disables everything but the Wordpress admin. It redirects most urls to the admin. All front-end related stuff is disabled (Appearance menu) and permalinks are customizably overrided.
Wordpress is a great platform, but I'm tired of writing customizations in PHP. This plugin is meant to encourge front-end development in other languages. Use something like the JSON-API Wordpress plugin or django-wordpress as a bridge. Integrate content and data and don't worry about learning a new CMS.
cd wp-content/plugins git clone http://github.com/ryanmark/wp-headless.git headless