Patrick and Chris, let's meet at the Fullerton Park and Ride at 5 AM (or maybe a few minutes before, no later). From there it's about 55 miles to the Starbucks off the 14 that you linked to so it should be an hour or less to get there, which'll get us there to meet up with Dave and Dan by 6 AM. From Starbucks it's another 56 miles to Willow Springs, so we should be there by 7 AM or so. Perfect.
Weather looks great tomorrow. Light wind, but cold in the morning. Dress appropriately.