Installation/configuration of a2billing (latest) and full integration with asterisk 10.4 and FreePBX 2.10(repost)

Hi there, I'm posting this project for the second time, however somewhat altered. I need the installation/configuration/realtime intergration of a2billing on a CentOS 6 server with; Asterisk 10.4 FreePBX 2.10 nginx 1.0.15 MySQL WordPress ## Deliverables * I need the installation (setup NGINX accordingly) * Configuration setup dialplan to enter all possible FreePBX functionality like voicemail/conference/IVR etc * Realtime intergration of a2billing with Asterisk 10.4.0 * A2Billing should be configured so that it can be used with calling cards by calling an toll free access number. * A2Billing should be configured so that users who have an account can dial outbound (national/internaltional) calls without going through an IVR, just like they would with a normal phone. * A2Billing should be configured so that users who have an account can dial each other without going through an IVR, just like they would with a normal phone (SIP Friends. * Fully setup for EUR currency. * A2Billing should be configured so that users with SIP phones do not have to enter a pin (they are authenticated with their username/password), or any other method which does not require any user interaction. * A2Billing should be configured so that for SIP friends GSM codec is used. * A2Billing should be configured so that external/international calls uLaw, aLaw, g723 or g729 is used. * A2Billing should be configured so that it is integrated with the DIDX api * A2Billing should be configured so that Agents can easilly manage the same functionality as available. * A2Billing should be configured so that it is integrated with my Wordpress website to display rates. * A2Billing should be configured so that PayPal payments can be completed. * **Every step in the installation/configuration/integration has to be well documented.** * I want every possible option in a2billing integrated as long as is adds services to my clients and does not make it more of an hassle for the client to use the service. As I might not be aware of some functionality between A2Billing/FreePBX/Asterisk I'm open to suggestions.