You may want to PM Chris since, as I understand it, he was President of Hawai'i 'Awa Council.
Are you interested in farming kava on Maui or Hawai'i Island?
Generally farm laws etc. would be same on all Islands.
A good instruction guide is Hawaiian 'Awa, Views of an Ethnobotanical Treasure available online to learn about farming 'awa, etc.