Ring Video Doorbell 4 - Product questions

Hi, I am considering a ring doorbell for my vacation house, but I have few questions prior to purchasing that I am hoping you can help me with.... Most likely considering the Ring Video Doorbell 4 due to the extra pre-roll video that would be available prior to motion detection. 1. At this house we essentially have hotspot powered wifi. It has 15 gigs per month. When we are not at the house there will be very little movement near the camera. My question is, how much of my 15 gigs will the ring doorbell use in just being connected to the wifi? I understand that the more motion activity the more data it will use but what is the baseline? 2. Does the app allow for battery life monitoring? This will not be hardwired; can I view from the app when the battery is getting low? 3. The doorbell will be mounted in a shaded carport. About half of the day the sun casts shadows from our neighbor's trees on the driveway. We have tried other cameras that detect motion as have not been happy. We had MANY false notifications because of tree shadow movement. How accurate are the motion notifications? Have shadows especially those from tree movement been reported to cause false notifications? 4. Are there any issues with the doorbell or battery working in extremely hot climates? During the summer, the temperatures can reach into the 120s. Will this be a problem for the doorbell or the battery? Thank you for your time and help,