Well, everything did go ok on the shocks/struts. Took about twice as long as I expected (8 hrs), but I'd rather go slow than mess something up. Rear shocks were like others said, not much room to work on the upper bolts but manageable - barely one click of swing on my torque wrench ratchet. For the front, I jacked up both sides at the same time as you need to swing the stabilizer bar down to get to the lower strut bolts...need both wheels off at the same time. Otherwise it was pretty straightforward.
It's hard to give an opinion on the Rancho 9000XL's - I think the original OEM shocks were so worn out that anything would feel worlds better. But ride quality is very much improved and my handling is back. Even my wife in the passenger seat noticed a difference in body roll, and that's saying something. The Pathfinder really does handle well for an SUV with new shocks, decent tires, and the Airlift 1000 on the rear.