Around 8:30. Goal is to be heading out on the trails by 9:00.

To be completely honest man, you might want to consider leaving around 6-7PM Sat night. It's not a very long drive so you'll be at the hotel by 10:00... have a beer or two and then go to bed. It'll make waking up & wheeling the next day a lot more enjoyable.

I've done the 1 day trip before... figured it'd be no worse than the 1 day trip skiing at Hunter Mtn (3.5 hr drive). For some reason, even though skiing take a lot more energy than wheeling, there's just something about "sitting" in a vehicle from 5am to 10pm that's even more exhausting. Hence I always drive up the day before now.