Forum site for WP - Drupal Joomla or similar - customise

Hi I have a new not live Wordpress site for fiction writers, I want to add a new named page for each registered user (I am using WP Responder to get emails/names, this can be changed). The user can then have a profile with avatar, description etc add files such as story pdfs, doc, etc, each file has a description field and manage that file list (display order, show /hide each file) the page name will be /user-display-name which they decide on in the initial setup. That is basically it. There will be an Admin system, for me to manage the users. --- ALSO (optional) Social plugs: a way to 'friend' each other (users) and also a way to show/hide the files to friends only or all public. Also a vote on each file if they allow that, and display of results. And some sort of instant chat between users. This is all plugins for forums or cms. --- WHAT TO USE This is like a MySpace page in that is just like a mini site page for each user. WP itself? There is a WP plug called Mingle. Can link off a nav button, but into separate section. A forum might be OK but I don't want that long commenting function, this is only for file display and comment. Or Drupal, Joomlas cms but that might be too big. So I prefer a separate system (any of the ones are fine, but prefer easy to use) that can be added in on my site as [login to view URL] You can get the emails/names out of WP Responder - they are on the db I assume; WP Responder this will have to trigger the setup in Drupal or whatever is used. UNLESS you have a different registration system, as the site is not live yet so no existing users. --- I also need this fairly quickly (week or so) - if you have lot of work on and are just lining it up, please do not bid. --- Thanks