i've seen a number of Liberty owners on the Hybrid forum BUT they are limiting their trailers to a loaded weight of 4000lbs or less.
but as was said, payload will be more of a limit than the 5000lbs. towing capacity.
the OP needs to look at the Liberty's GCWR(not GVWR) and payload amount and hitch capacity.
AND with such a short wheelbase, the OP MUST get a good WDH with built-in sway control. Equal-i-zer, Reese Dual-Cam, Hensley or Propride would be some of this type.