Wordpress Plugin to restrict blogs and articles

We need a plugin that can restrict access to Wordpress content in a few ways 1. Needs to be able to restrict access to three different areas of an article page independently - Article Content (display preview first paragraph then block the rest of the content with area to login in to view or register) - Video Player (blocked with prompt to login/register to view video) - Comments Area (display first comment, hide the rest with a prompt to login/register) 2. An area in the article editor to select which of the three content restrictions (above) to apply to a single article (needs to be able to select if only a single restriction will apply or multiple) 3. Admin page that has a few settings on it regarding restricting user types access to categories (similar to #2 but instead for entire categories) - admin area would be able to set restricted categories for any of the existing usertypes that override single article settings - each restricted category would have the option to restrict article content, video player content, comments area content or any combination of these including all three -admin area would be able to set the text and account registration link in the box that prompts the user and blocks the content