Blog Fixes and New Features

I need to fix and enhance a site, which is a few years old and has a lot of posts and comments. The site is powered by Expression Engine. The upgrade should either use Expression Engine or Movable Type. Note: all work is to be carried out on a "mirror" website, so that there are no transition problems with the live site. Only when the mirror website is working 100% will we make the switch. There are 10 tasks to be performed, including: 1. Fix the following issues in the current EE setup: - Captcha is not working properly. - Various sidebar widgets -- e.g. the RSS feed link, archives and contributor names -- not displaying properly on blog homepage - The site is not recognized by Technorati. 2. "Add this" buttons/text for: [login to view URL] | Digg it | Tailrank | Reddit | Newsvine | Now Public | Technorati 3. Allow blog contributors to get their own page & profiles. 4. Allow contributors to update their profiles independently. 5. List all contributors on a "Contributors" page, and show the top commenters on the homepage. 6. Include a [login to view URL] feeds widget in sidebar 7. Make Commenting interface friendlier and easier to use (will explain). 8. Add new banner/logo (will be provided) to website and adjust look-and-feel/layout accordingly. 9. Allow users to subscribe to comments via RSS. 10. Allow commenters to track their comments, possibly by giving them their own page (may require registration? -- currently registration is optional).