Project for Joomla or Wordpress PRO (maybe Drupal?)

No templated bids. This is for a complete design that includes up to 3 home page design mockups. Although the web design and features are basic, this project is unique because there will be a parent site like this: [login to view URL] with city specific domains like this [login to view URL] So you can do this via multiple instances Joomla for each subdomain, via the Word Press subdomain plugin, or some other way. This needs to be a functional website, although it is a protoype for a larger project, so if you do well this could roll into more significant work. We need to have 20-30 subdomains for this smaller project to show that it works. It will be a major plus if you can demonstrate a similar project. This will also need to be SEF coding, w3c validation, standard ad banners and other basic features common to WP and Joomla sites. Looking for real Joomla & WP Wizards. I guess Drupal could work too.