yeah, pork is safe at 160 - but the point of bringing it up higher is to break down the connective tissue, just like a brisket. I eat beef rare, but a brisket I take up to 190 before taking it off the smoker, and it's always super moist, tender and delicious!
I'll likely be putting the butt on in the late evening, and smoke it overnight so it's ready to pull by 2 or 3 pm, including rest time.
As far as what kind of jerky I like? The kind that goes in my mouth.