One more thought - Solid plan. I’d also add a short device code in the filename (like IP13 or PXL6) and for bursts or Live Photos taken in the same millisecond, append a 001, 002 sequence to prevent collisions when merging cameras. When writing metadata, include EXIF DateTimeOriginal plus OffsetTimeOriginal/OffsetTimeDigitized and the QuickTime creation time to survive DST shifts, and stick to ASCII names without spaces for cross‑platform sanity.
In a two level home we found non WiFi monitors far more reliable through walls and with strong range from nursery to kitchen and night vision that works.
On a tight budget prioritize all day battery life and test in your space to confirm coverage.
