Good going, Nokomis! It was friggin' cold! yesterday. I kept expecting it to warm up so I could peel off a layer, but that moment never actually came. Not to mention, the headwind for the first half of the ride wasn't exactly pleasant either. At the first rest stop I saw one woman wearing a Hill Slug TE t-shirt and I talked to her to see if it was you, but she was someone else.

My stats:
60 miles (I think my computer blinked out a few times, really I did ride the whole 63 miles)
16.9 mph avg speed
88 rpm avg cadence
152 bpm avg heartrate

All these stats are thanks to the Team Bag Balm folks that I rode and drafted with the entire ride. Solo, I would be considerably slower given the headwind.

Based on the stats you posted, I'm sure you are capable of finishing RACC next weekend. Once you have a certain amount of conditioning (which you seem to have already, based on your numbers) then the rest is all mental and nutritional. Go for it!