I am working on a social media type site, where users can create "buckets" of friends send them email messages. It's a very basic concept. Nothing new or special. I just want to figure out how all this works from a technical standpoint. I plan to include some rich functionality such as drag and drop. For instance, users can "drag" friends into a bucket, similar to a Google+ circles experience.
I have a LAMP developer building the MySQL, PHP, and JQuery.
My concern is how to manage all of this. A user needs to register, messages need to be stored and displayed on profile pages, auto emails need to be sent, etc.
Would Joomla or Wordpress work for this? Or should I stick with phpmyadmin?
Thanks for any insight you may have.