We would like to visit the Pipiwai Trails at Haleakala National Park and we would also like to see the Hana Lava Tubes. Can this be done in one day? We will be staying the whole week in Lahaina and are planning to leave at 5 AM. How long does it take to get there and is the road really that dangerous as I hear? We will be traveling with our 2 kids (11 & 6) and driving in a ford explorer.