Hi,
I recommend you test with sample data/usage that is as close as possible to what you will use in your application. Your design and usage patterns will have great affect on performance. Below article outlines the limits and targets for Table:
Scalability and performance targets for Table storage
https://video2.skills-academy.com/en-us/azure/storage/tables/scalability-targets
One thing you may want to consider is to design your application so that you may switch to Cosmos DB if needed. Please read below article, and initially take a look at the API for Table benefits chart where you have Storage Tables on left and Cosmos DB on right:
https://video2.skills-academy.com/en-us/azure/cosmos-db/table/introduction
Design scalable and performant tables
https://video2.skills-academy.com/en-us/azure/storage/tables/table-storage-design
Thanks.
-TP