First why you want to put new tires on the truck that you are not planning to use for next 1/2 a year?
They will age for no reason.
I used to have dually truck with 19.5" wheels and Hancock that come with it used, lasted for another 90k before I replaced them due the age.
That was work truck, so I bought Sailung replacement and those lasted for 60k.
Chinese tires are not famous recommendation but for $150 a piece they worked form me well.
If I read your profile, you have SRW so quality of tires is more important than on dually, but with so many choices and variations, sometimes I advise coin flipping.