Hey guys that sounds great for Friday.
My company allows me to work from home one day a week (which basically means riding with little to no one on the trails). Usually I work from home on Tuesday's, but this week due to some scheduling stuff, I get to work from home on Fridays, which means I can meet you guys at the park whenever.
I noticed you guys mention 4:30, I should be there by then. I plan on leaving Philly around 2:30, but no later than 3, as to beat as much of the holiday traffic as possible.