limits...Is This Possible?

Trying to figure out the best CMS for the job...large one

Here’s the basics I know are available in Modx: Polls/surveys, email forms, blog, newsletter, multilingual, members access, forums, etc

But I have a client that’s also after:
1) Facebook style personal home pages (possible) but also including....
2) Ebay type auction system with buy now features...all I can find so far is Foxycart but this isn’t really going to meet the requirements
3) Integration of the above into wap mobile phone website that allows payments through phones (Paypal sounds good, not much of a problem there)
4) Internal messaging system
5) wiki for online document collaboration

I realise that most of this will be custom but was wondering if anyone has started on/knows about any of the above features already integrated into Modx.

I like my Modx and would like to try this out here before shifting over to Drupal/Joomla/custom options.

Have a nice day,
Derek

That sounds like a lot of custom work in any solution. Pick the starting point that gets you farthest along or that imposes the least amount of restrictions and start your coding engines. Good luck!