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The Jayco published 640lb hitch weight isn't representative of the "actual" loaded hitch weight. The loaded hitch weight for a 32ft TT should be 13% to 15% of the TT's actual loaded weight, and the TT loaded weight is the result of your personal loading habits.
Using the 28DSBH's GVWR of 7,500lbs (worst case), the recommended loaded tongue weight would be 975lbs to 1,125lbs.
Originally Posted by 12VOLTMAN
snip...... I do not have the max tow package. The truck says I should be able to pull 9600lbs ......snip
Since you don't have the Max Tow Package, you will have to confirm your F-150's payload capacity because the TT's loaded tongue weight is subtracted from the TV's payload capacity.
As stated, a 32ft TT is a long trailer requiring some additional awareness while in-tow and in confined areas (some campgrounds/campsites, gas stations, etc.).