I've decided to go for it. After the meeting on wednesday, I still felt excited and it didn't hurt that among the group folks from last years event were present and said what a cool positive experience it was.
So, the journey began this morning with a 9 am group ride over at the bayside trail near the Seabreeze Market. I chose to ride with the beginner group and the leader went over the basics. Nothing too strenuous just a flat 5 miler with emphasis on getting to know the gears. I have a mountain bike and will need to switch out my knobby tires. No need to buy a road bike for this event, though I may consider switching from toe clips to real biking shoes that attach to the pedal.
I'm just gonna take it one week at a time.