Hi,
As you list key features, there is one rare,
- night vision / ability to record at night - 10m minimum- record continuously for at least a month
- allow me to backup video from the DVR on to a USB stick or other external storage
- 2 indoor cameras that send video wirelessly to the DVR would be great. Wiring the cameras to the DVR is possible, but I would prefer wireless.
- ability to view real-time footage from my iPhone via an app.
- security alerts to an email address / telephone number
- ability to view recorded footage on PC
It is depends on Camera for IR or not and whcih resolution in low lux.
Others is not difficult for reaching the bar, e.g wirelss you could consider bought wireless Camera Tx/RX pair and hook up the RX device to DVR.
If you need any information, pls feel free contact me.