I myself wouldn't under sell a system like Arlo. Those camera's are great for providing on the fly monitoring and awareness, but not an effective means of continuous recording. It really depends on what your individual needs are. I use both types of system's, i.e. PoE and VueZone. VueZone being the 1st generation of what is now Arlo. Those Arlo cameras are really nice, but rather expensive. Cameras like that communicate off a proprietary receiver and use a proprietary mobile app and web based interface for accessing them.
Camera's like that are great for setting up to record on motion detection only and sending alerts via their mobile app, but battery life is dependent on the frequency in which they are being accessed/used. I use my VueZone cameras only as a means to send me a snap-shot image if activity is detected. At that point I would access them if needed and initiate a manual recording, etc. The beauty of this type of system is the ease of moving the cameras around. They can be great spy cams as well and battery life with average use is about three + months. I get about 6-8 months on my VueZone cams.
Running a PoE system would be the best choice for monitoring/recording locations of increased activity. It's not that difficult to run conduit and a
Cat5/6 cable outside either, but does require a NVR (recorder) and/or a PC running
Blue Iris (or equivalent) along with a PoE injector for powering them. I'm not sure if all NVR's provide power, but mine do. The only cams that need an injector (power) are those running as standalone on my network.
Take a moment and view the Arlo web site. These might be all you need for now, but in time you will benefit far better off a dedicated PoE based system.
Tiger