Still tinkering with settings. Nothing too much new to report. But, here is one interesting thing. I have all the logs enabled on the AP, and have been peeking at them now and then. Today, when my wireless dropped, I went immediately to go look at the logs, and noticed they got wiped out, which is entirely unhelpful.
I clicked "Apply Log Settings Now", even though now settings had changed, to start the logs again. Doing this enabled the wireless signal again.