Well, it's done: I got a real job.
The law firm where I'm temping offered me exactly what I was hoping for. After I get back from vacation, at the end of May, I'll start my new schedule: Friday, Sunday and Monday, 12 hour days. Very good pay (for this field in this city), generous vacation time and good benefits. The hours give me a rest of the weekday office environment, and most importantly, time to write.