Prompt ready blog package for integration into a working project. All that I have seen before hinders the work of the main project or is difficult to manage.
If there are no such packages, you may have ideas on how to make a blog in a short time using extraneous packages. For example, they have already thought about raising a blog on a ready-made package as a separate application with access to the admin panel and simply go to another database for the data, but this is a perversion.