How far away is the camera located? I feel like you would be better equipped with increasing your wifi range. I use Unifi at home and for business. They have some really impressive equipment with a real nice UI for remote management.
This is apart of their mesh network
Or if you have line of site with your camera, you can use a couple of Long Range Antennas. Im talking 16-30kms range.
I use this tool when checking elevations and obstructions.
They even operate at 900MHz to penetrate obstructions like trees
And you did say remote… Well they have you covered there too…
And no I dont have shares in this company. This is what I use at home. I have 1 AP which I run at its absolute lowest power. If Im going to spend some time outside in my back yard, I just crank up the power from the app.
You can still have a Meshtastic Repeater up there, perhaps you will be able to perform updates to the node if it was attached to an RPi through the USB.
So, not to take away from Meshtastic and how great this project has been, but I feel there are already tools out there that will achieve even more and be very reliable doing it.