Tony,
This is a weight police officer checking in. The BIGGEST Airstream has a GVWR of 10,000#. The one you are considering is smaller and lighter. Even at 10,000#, this is about 1,000# - 1,200# hitch weight. For a single driver in the cab, even with a few hundred pounds in the bed, you should still be in great shape.
There is no reason to yell. A F150 will handle the job.