Buy the extended warranty and watch for metal out of the axles.
(I've had axle issues in 3 of 3 Cherokees. 2 occurred in the standard warranty period. The 3rd will be at my expense with only 50,000 miles on the vehicle.)

Is there some storage room under the rear seat?
In the non-Grand Cherokees (which the Libby allegedly replaced) there is some space under the rear seat cushion. I carry the service manual and some spare parts there.

Good luck!