Thank you for the clarification. I just read the elastic blog post on verison 7 announcement. I understand that it has changed.
We don't have any plans for setting up machine learning jobs or data ingest pipeline. So those will be set as false. However we do have a large volume of searches and very few heavy searches. It does not involve any large aggregations or analytics. So do i need any dedicated coordinating nodes ? I believe data nodes will also be acting as coordinating nodes.