As a first-time Omada user, I have several inquiries about setting up a network for a student hostel accommodating 60-80 students. The goal is to use Omada's Hotspot Manager feature for a captive portal, ensuring only paying students can access the internet. Each student ID will be limited to two concurrent logins, allowing the use of two devices per student. With 70 students, the total number of devices could reach 140, potentially increasing to 200 in the future. VLANs will be established to separate the student WiFi from the hostel's administrative network.

The current equipment list includes:
- A 600 Megabit/sec fiber connection
- ER7206 Router/Gateway
- Three EAP660 HD APs
- OC300 Controller
- TL-SG2210P Switch

My questions are:
1. Can I opt for lower variants like the ER605 router and OC200 controller without compromising the user experience for the number of clients expected?
2. Would the ER7212PC Omada 3-in-1 Gigabit VPN Router, which combines the controller, switch, and router, be capable of handling 250+ clients?
3. Does the captive portal function as intended, limiting each student ID to two logins, and can lower-tier hardware manage this number of logins?

I would appreciate any tips or recommendations for setting up this network, as it is my first time managing a system of this scale. Thank you.