You may be even closer than you think.
https://www.rvusa.com/rv-guide/2015-keystone-hideout-fifth-wheel-floorplan-299rlds-tr21648
The spec'd dry pin weight is 1485.
GVWR on that trailer is 10,500 so an estimated pin weight of 1850 at GVWR
(The 1485 is 18.5% of the dry weight 8040 so it's a reasonable indicator of pin weight percentage, generally 20% of GVWR is used for estimating fifth wheel trailer pin weight.)
If you have weighed in the wet loaded pin weight at 1430 then some light weighting to the trailer has occurred and you're good. If not, it may be more than the published weight.
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2016 Cougar 1/2 Ton Series 283 RETWE
2018 F150 EcoBoost FX4 Lariat Max-Tow and Heavy Duty Payload Package