The number of members comprising the board shall be seven, two of whom shall be nonpermanent members appointed by the Lee County Commission, and the remaining five being permanent members consisting of the presiding circuit judge for the 37th Judicial Circuit, a Lee County district judge appointed by the presiding circuit judge, the Lee County Sheriff, the District Attorney for the 37th Judicial Circuit, and the Lee County Circuit Clerk. If none of the permanent members is a minority, then the county commission shall appoint at least one nonpermanent member who reflects the racial, gender, geographic, economic, urban, rural, and ethnic diversity of Lee County.