Greetings from Comox, Ron. After 8 years of flying drones, I have yet to see the Drone Police shaking a finger at me for being a few grams overweight. Enjoy your fun new hobby—you will find it to be quite addictive!
Mapping the area can be prepared using a waypoint in the DJI Fly apk or on the new Litchi Hub, which is automatic. I have prepared a mapping mission tutorial for inexperienced pilots. It is necessary to connect the mobile phone to the computer so...
I might wonder how accurate and repeatable the scale is, especially when subtracting the pepper grinder. Why not fold the arms and set the Mini 5 Pro upright? 1.2 grams is such a tiny difference—4/100 of an ounce.