Zend framework application architecture and ReadBeanPHP ORM

Hi All, I am part of a team of 3 web developers and we are building a social media application for a start-up. We have decided to go with the following software stack for the server-side: * Nginx * MySQL * PHP5.3 * Zend Framework 1.10 * RedBPeanPHP ORM (http://redbeanphp.com/) I have been developing web applications for the last 5 years and have used several custom frameworks. Having no prior experience with ZF (ZendFramework), I would like to have your feedback/experiences on using ZF in a medium (could grow large overtime) scale project as well as guidelines and best practices on application architecture. Further more I would like your input on ReadBeanPHP ORM. Regards Ifthikhan Nazeem