I did it!
I did it, I entered my first bike race! And I don't think it will be my last!
Five laps of a 4 mile circuit with this elevation profile:
Women's racing is slow to catch on in this area, so we had a combined field (Cat 1-4, though I don't think any 1s were there) with 14 women starting and they said this was the biggest women's field they've ever had. I got dropped on the climb after 3 laps, pulled a chase group of 3-4 for most of the next lap, and caught the lead group just in time to get dropped again half a lap later on the climb to the finish. I finished 8th, 19 seconds behind the rider in front of me.
This board has been a treasure trove of tips and techniques as well as encouragement for newcomers. Though most of it wasn't directed specifically at me, I just wanted to say thanks to y'all.