experience with joomla, and its plugins. template design. performance of joomla system, forums logins, content.
for the joomla template design i use a licensed artisteer software, that performs the adaptation for joomla inan easy way to create a template. if you need a login for the users, or a forum we could see the best plugin.
there are more things to talk about the proyect. like which subpages or sections it may have,