If your primary concern is keeping deer out the key is a tall (ideally 8 ft min) and visible as opposed to strong or electrified.
Electric fencing is best effective for preventing climbing critters, as the shock is diminished significantly by fur.
As you rent, tall bamboo poles, with inexpensive bird netting attached with zap straps (cable ties) flagged every foot or so will generally eliminate deer access. Keep in mind, on downslopes it will need to be higher. This can even be done with closely spaced fishing line, flagged with mylar flagging tape or with suspended CD's spinning in the wind
If you already HAVE an electric system it would add a layer of protection, on the outside of the tall fence, keeping them from getting close
enough to jump. They do require constant maintenance and monitoring, and may be better suited for smaller enclosures to keep stock/fowl safely contained.