Wireless planning for a conference, need advice for Netgear R7500

Hello there, each year I assist with the wireless setup for a conference in Louisville. We host 15 training classes prior to the conference, most of which require internet access. Training will consist of around 350 users. We have a few constraints, the WAN circuit is a symmetrical 100mbps connection, each training class has their own separate network, and the classrooms are close in proximity to each other.

In years past, we have been struggling to meet this demand due to poor equipment...

Wireless planning for a conference, need advice for Netgear R7500