It ain’t 9:38hrs. I’d give it 4 hrs max, probably closer to 3. Conditions of the FSR & amount of traffic will dictate how fast you can go. It’s a nice drive so no rush. 4 hrs will give you some time for breaks along the way. I’m sure there are local guys who can chime in on the conditions of the road
And how active it is. A few days at Murphy’s sounds pretty awful, how you’re gonna be okay. Prime time.