Congratulations!! Very impressive but retirement at 55 is even more impressive!!!
Just finished my 1st yesterday. Quite a bit slower than yours. Took 8 hours. Did mine solo by circling Lake Arrowhead 11 times. Did get a draft off a truck for about 2 blocks. The first part of the day Cal trans had a downhill section flagged with 2-10 delays. About halfway through the sky opened with a short downpour. According to the altimeter the ride included 8620 feet of climb. Knees r sore!
BTW I only lost 2lbs, expected more of a water loss than that.

The drivers in Lake Arrowhead seem much nicer than up in Big Bear. After 100 miles only 1 car came close. One trip around Big Bear lake usually invovles at least 10 close calls. It's worse than PCH in L.A.