People say that body lifts are easy and lifting the body itself is. It's all the pieces and parts that need to be dissconnected and moved or relocated that can trip you up. At least on Xterras, even trucks within the same year can be slightly different in how wires, brake lines and hoses are installed. It's good to have several people looking and listening while you lift.
Start now by spraying everything that you can think of with PB blaster to loosen rusted bolts, and I mean everthing. It's the little bolts and attachment points that can be tricky. It doesn't hurt to spray too much or spray things that don't need to be touched.