Hermes,
Thanks, for reminding me about the turns--I was more focused on the lack of hills. I have been doing some interval training on my own as well as with the team training rides on the weekends and I am usually pretty good with short accelerations and recovery, it is the longer climbs (say 10 minutes or more) that I seem to need to work on right now. However, it has been a long time since I raced so I really don't know how I will handle the race intensity. If I recall correctly, the acceleration out of turns gets harder the further one is back in the pack, so I guess I should do my best to stay toward the front quarter or so of the pack as long as possible.
There is a weekly criterium series in Nashville, but I think it starts in May. If things go badly this weekend, I may skip some of the races I had planned to try this spring and concentrate on the criterium series.