I would try something like this:
Internet
neighbor router/ap 192.168.1.1 (remote LAN1, WLAN1 SSID1, DHCP pool1 192.168.1.2-255)
(((wifi 300Mbps max)))
ap extender (WLAN1 SSID1)
---wired 100Mbps---
your router/ap 192.168.2.1 (local LAN2, WLAN2 SSID2, DHCP pool2 192.168.2.2-255)
your LAN switch and host devices...
If the OBi202 is to be your router:
o set its IP address and DHCP pool to not conflict with the neighbor's.
o set System Management - Device Admin - Web Server::AccessFromWAN = not checked
o note that its max throughput in router mode is 30Mbps (your neighbor won't mind).
o it will have no WLAN2 SSID2 WiFi.
I'd prefer using a mainstream router/ap to provide own local firewall, LAN, and WLAN; and use the OBi in bridge mode as 100Mbps switch.