It's time to start considering goals.
First, if all the things I can't control go perfectly:
Fly goal: 3:15
Happy goal 3:22
Content (New PR) goal: 3:27:44
Stuff happens: 3:35
Breaking 3:20 would be pretty amazing. So would not hitting the wall. I'd like to negative split; I'd also like to run the last 10K faster than the first.
Mostly, I just want to have a good run, and an enjoyable time. There will be plenty of other races in the future, and I hope to be running them, too. :)