No public member shall be a current or former licensee of the board or an immediate family member of a licensee, or be currently or formerly employed by a public accounting firm, bookkeeping firm, or firm engaged in providing tax preparation as its primary business, or have any financial interest in the business of a licensee. Each public member shall meet all of the requirements for public membership on the board as set forth in Chapter 6 (commencing with Section 450) of Division 1.