Mike
When it comes to towing the whole system is only as strong as the weakest component. Unless things have changed since 2012 the standard hitch on the 2552 is rated at 5,000 pounds. Starting with a vehicle with a curb weight of 4,228 pounds there is 772 pounds of cargo carrying capability remaining.
The weight of any optional factory installed equipment and installed after market equipment must be subtracted from the remaining 772 pounds. This would include the weight of the tow bar, base plates, safety chains and auxiliary breaking system. After considering this, it's just a matter of watching what gets loaded and keeping a certain margin for safety in mind.
NOTE:
Curb weight is the total weight of a vehicle with standard equipment, motor oil, coolant and a full tank of fuel but not loaded with either passengers or cargo.
Barry