Be sure to stop at your specific immigration list for the paper that tells you all of their specific requirements. I also had to have map to my house and pics of me inside and outside my place of residency and shortly after I turned in my paperwork I had to be st my house for a videocall so my officer could take screenshots of me at my place of residency.
You might consider Ao Nang or Hua Hin as locations. Both feel like island life but are not on an island.Ao Nang is near an international airport which comes in handy