Website redevelopment and Content Management System

We run a number of websites that fall under our distribution company and we re looking for an upgrade of the existing main website and the "child " websites. We require: - Content Management System to allow us to make modifications and changes (A MUST) - Template for us to develop other websites if and when required (A MUST) - Partner Portal with secure login (A MUST) - Whitepaper library (A MUST) - Secure Online quoting and ordering system for partners to be able to create their own quotes etc (NOT URGENT) - Ability for Streaming video NOT URGENT) - Registration forms for software evaluations etc - Ongoing maintenance of the site Existing main website: [login to view URL] Other "child" websites [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] Just to name a few. Few websites similar to what is required: [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL]