Need expertise on Elasticsearch cluster nodes/shards for my type of data

I am storing around 2TB of data into Elasticsearch, and it only changes once a quarter. I'd like to chat with someone who is an expert in designing Elasticsearch clusters so I can be sure to get my cluster built the right way ie the correct number of shards, how many nodes I should have, how to add or remove nodes etc. Deliverables A definitive plan on how to design my Elasticsearch cluster including number of shards and nodes etc, plus what I need to do or be aware of when adding/removing nodes for scaling purposes.