Hi Son,
In regards to the security features you listed.
I think you will need to go with a WIPs solution like Air Defense (ADSP).
https://www.extremenetworks.com/product/extreme-airdefense/
https://cloud.kapostcontent.net/pub/a204287f-15d4-4174-80f9-47ac50bdec35/extreme-airdefense-wlan-management-data-sheet
In regards to Firewall Sessions the only scaling info we have are for the firewall flows:
APs are 25k
Controllers are between 50k -200k depending on hardware model.