Well, I’m a man of my word! I got your $20 the next time I’m passing thru Oklahoma!
Or hit me up if you’re in Seattle. :C
But in the mean time, the right pressure is based on weight and you appear to be categorizing all 4 wheels the same.
Go outside, set your fronts at 50-55lbs (assuming stock ish size tires) and the rears to 35psi and take a quick test drive.
65 is acceptable but stiff up front and still rock hard on the back of an empty pickup.
You would want to air up a bit in the rear when hauling the TT but 65psi will handle the full tongue weight of a wavier trailer than yours AND a bed full of stuff.