Ansible Automation Platform 2.3 Walkthrough

Awesome walkthrough of 2.3. I have few questions on 2.3 version.

1. How many execution nodes can 2 controllers handle ? 12-15 exe nodes?

2. In case i want to add more controller nodes or more execution nodes? Do i just update the inventory file (incl new exe nodes) and re-run the setup on controller node ?

3. I have single node controller, Can this be scaled to 2 node controller + 15 nodes executions just by re-runing the setup with updated inventory file?