6500 lb with 2001 Expedtion- 4x4 5.4, Adequate?

Just started using a new (to me) 74 Boles Aero 31-footer. Dry weight 5900 lb. Plus people and junk might be north of 6500 lb TV is 2001 Expedition fully loaded, 4X4 with tow package and 16" tires. ...