345883 custom website & template tool

I have a client requesting the following: a website that will be a template for our customers. When a customer signs up with us we need to create a subfolder that is all of our sites information with that company logo and welcome message. We will be serving several sub-sites with the information from this one site. The process of creating the sub-site needs to be automated. I was thinking about doing this in joomla...but please tell me your best idea for an integrated solution! -Main Site: the main site will not show any information - only a logo all the page content will be viewable only on the sub-sites up to 10 pages of information - editable in a WYSIWYG WYSIWYG needs photo and pdf upload ability -Admin Panel - Main Site: full CMS for main site contents sub-site account creation (we can discouse details of information to gather) sub-site creation should create the directory and files this directory will represent our customer this will be an extension of the customers current website account management (change info, reset passwords, delete account) view statistics (sub-site usage, visitors and such) edit contact form destination email for each subsite (defaults to email address specified in panel) multiple recipients option -Admin Panel Sub-Site: (customer login portal) change company information upload/change logo change color scheme for template default color options or customer color codes colors options for: text, body, menu, heading edit the 'message from the manager' there will be 3 messages available an option to rotate the messages edit the footer custom menu items button names and links -Sub-Site: template with the main site content and the customers logo display's the 'message from the manager' on the main page footer with company info (contact, address, customer menu) contact form