So in the presentation, you guys stated that you will use Wordpress to handle everything. Just a few quick suggestions about working with Wordpress (some of these you already know)

• DON'T MODIFY THE CORE FILES, i know it is a free to use software, but wordpress is so easy to modify that you should not have to modify the core files
• do not allow the Apache process have write permission to where ever wordpress is installed, this will prevent wordpress from automatically updating
• Use memcached, one of the biggest issue with Wordpress is the number of DB calls per request, and excessive server load
• Change MySQL connection close time to 3 seconds, this will help release connections sooner so that you will not have any issues with not having any open MySQL ports.
• And do not forget, disable WP_CRON and set up your own crontab