social networking website project

Hello

i am looking to build a social networking website with a difference. it will be used by:
1-the public to stay in touch with each other,find new/old friends, and share stuff!
2-businesses to advertise and conduct surveys
papervision3d will be used for all the user interface, with dynamic engines working in the
background (php,api..etc)...users of the website will be able to:
-pick a pp3d template they can customise for their home page.
-access their other social networking sites through a single log in/page.
-make voip and video conferencing calls to each other or in a group possibly via a third party
widget embedding code
-share videos,pictures and files securely and easily.
-online gaming again possibly via a third party embedding code or a small number of custom
games
-stream live tv/radio to the site
-broadcast live footage to the site via an app on their smart phone.

The idea is to 1) pick the best element of each main social networkng site 2) offer
users more features and functions 3) build a database of unique visitors 4) get businesses
to advertise!...and just to clarify, im not looking for a copycat, like-for-like to
another website. i want to use whats already out there and add my own vision to it !

This is an ambitious and challenging project so if you have the experience,creativity and
skills to build such a project then i'd love to hear from you with your best quote for
your work and how much time is required for a finished project.

this is in brief what its all about, i am in contact with other design companies who
confirmed it can be done, and im comparing quotes and making a shortlist.

kind regards
AL
Manchester