Configure postfix with whitelist

Need POSTFIX guru who knows POSTFIX intimately, to advise on configuring POSTFIX on a CENTOS 6 server with whitelist. Server has LAMP environment, and includes postfix, mySQL, php. Presumptions: All email will only be addressed to ONE publicly available email address, e.g., main at mydomain.com. Most incoming mail is expected to be spam, but NO email is to be blocked; rather, all incoming email should be diverted by POSTFIX to a spam folder underneath the main at [login to view URL] address OR to a secondary email address (e.g. spam at [login to view URL]) EXCEPT whitelisted senders' emails will go directly to the primary main at [login to view URL] address. Also need a mechanism for viewing content of the diverted mail (spam folder OR spam at [login to view URL]), e.g., roundcube or squirrelmail, or ???, and to allow false positives to be sent on to main at [login to view URL] where it will appear to be originally received at the main at [login to view URL] address, and there needs to be a process within the webmail viewer to add the sender to the postfix whitelist so that all subsequent emails from that sender will go directly to main at [login to view URL] without diverting to the spam folder or mailbox. ALL mail must be delivered to either spam at [login to view URL] (or folder under main at [login to view URL]), OR whitelisted mail to main at mydomain.com. Do NOT want to block any mail, nor use spamassassin or other mail blockers. Instead, only want to use the internal mail delivery controls inherent in the postfix configuration. Project will involve advice on setup and configuration, answering questions, providing alternatives to accomplish the goals listed here, and paid on an hourly rate basis. Project can be fine-tuned between offerers and project owner. Project owner will implement the recommendations on a virtual private server or cloud server environment, test, and then put into production after testing shows that the configuration works as intended.