The board is capable of getting a fix <1m accuracy.
The software at the moment isn't, due to battery optimization we look at a minimum satellites after this we turn off the gps module.
The software is opensource and so you can make your own changes to achieve the <1m accuracy.
In New Zealand you have a lot of sun hours, so I expect this will be possible.
I advice you to make a power calculation if this is possible.
On the board we have a magnetometer and accelerometer.
The GPS fix can be time based, every x minutes. And/or by movement trigger from the accelerometer.
The RN2XX3 module can be put into deep sleep.
Let me know if you need more information.