Performance Testing approach in DOCKER container environment

as per my experience following migbt be good approach to do performance testing in below enviorment
cloud Architecture : APP - DOCKER Container >  Kafka > CASSDB > ELASTIC
Baseline testing
1. test with default config and specific test data, come up benchmark result for sizing/capacity planning to recommend in production
2. test with 1 container | 1 kafka node | 1 cassdb | 1 els node capture result
2. test with 1 container | 3 kafka node cluster | 5 cassdb cluster| 5 els node cluster capture results

Scalability (Identify max capacity of application)
1. test with x,2x,3x.. test data | 1 container | 1 kafka node | 1 cassdb | 1 els node to identify application capacity with single instances
1. test with x,2x,3x.. test data | 1 container | 3 kafka node | 5 cassdb | 5 els node to identify application capacity with single instances