The other numbers are Max cargo and axel rating.
With 850 lbs. on the tongue how much cargo capacity do you have for people, camp gear and other stuff you cannot live without. When loaded you may be surprised at how close you come to the max axel weight also.
How a rig handles is such a personal opinion that only the OP can decide if it is fine or a white knuckle ride.
Also I have found that you can add about 1200 lbs. to the Dry weight and 200 to 300 pounds to the dry tongue weight by the time you ready for the road.