It sounds like the location should be great for testing. Sure, I’ll wait for the logs.
The LoRa radio link seems solid, but it could be worth testing the setup from this thread. It explains how to transmit base corrections via the telemetry link. Our Ardupilot integration guide offers additional details. It might help us rule out any potential differences between methods.
If you have stable internet in the survey area, I’d also suggest trying Emlid Caster.