Hello @AVSSpecialist,
Can you elaborate a bit more on why you want the use the Balance One Core as a WAP controller only? Does the customers site already have a function high quality gateway/router with enterprises DHCP options?
You could attempt to set the LAN to a static IP with no DHCP running, though the DHCP server you use will need to offer DHCP Option 138 and you will need to follow @Alan’s guide on doing this, be aware that consumer routers rarely support the extended DHCP options.
Here are some relevent previous posts arroound this subject for you