If your body mounts are shot, then replace them when you do your body lift. To install the body lift, you'll have to remove (and reinstall) the body mounts anyway.
A worn out body mount will pass vibration to the cab of your Jeep, as well as not support the body of your Jeep properly. You must have body mounts to absorb shock. Most body lift kit spacers / pucks are hard, sometimes even being made of metal.
There are some body lift kits (Daystar 1" I believe) that are a body mount / lift kit all in one piece. If you are looking for a one inch lift, then I would go with this.