I have a 2014 8528RKWS. I weighed it on a Oregon DOT highway scale and came up with 1550 lb pin weight and a 8450 pound trailer weight loaded like I normally travel. I have 2 group 27 batteries and a good size sliding toolbox full of stuff in the front storage compartment. Black and gray tanks were empty but I had about 10-15 gallons of fresh water in the tank as I recall.
Hope that helps.
2001 Ford F250 7.3l converted to F350 specs
2014 Flagstaff 8528RKWS
2 - 2006 model year Border Collies