(1) is twenty-one years of age or over;
(2) is of good moral character as shown by at least two letters of favorable character testimony; and
(3) is not addicted to intemperate use of alcoholic stimulants or narcotic drugs. The application shall contain such information as the Commissioner reasonably requires, which may include affirmative evidence of ability to comply with such reasonable standards and regulations as are lawfully prescribed under the provisions of this chapter.