Calculating Hardware requirements before installing Neo4j Enterprise Version

Hi Team,
I have been assigned a task to install neo4j enterprise on premise in a Private cloud.
The data will be increasing at least 6to7% year on Year and in worst case 20% YoY.
I have been struggling to decide the cores/cpu's/ram/storage and clustering size before deploying the neo4j .
I need help from the community that how we shoulkd calculate the hardware requirements before making environment like DEV,UAT and PROD.

@somdeb44

if using enterprise and clustering, both requiring a license, your best path would to be open a support ticket at support.neo4j.com

I can't create a support ticket since i don't have a license agreement.
Currently i am at a stage where i am manually guessing the config's and keeping them as a note.
Now to confirm my assumptions i have to either connect with neo4j support stuffs or may be a neo4j sales rep.
I am not getting any clue on how to figure out things which can resolve my doubts.