FenderBumper
The "good old days" ??
They announce the schedule in October. I think the plans are orchestrated long before that. I don't know that it would leave them enough time to coordinate everything. I didn't sleep in a Holiday Inn Express last night so I can't really give anything more than my opinion.
I'm happy you know your limitations.
Simple logic. As you say, they currently set the schedule 4 months before the first race, and things don't implode. nascar can decide which 5 would work in advance. Could even have the champ announce the track during media right after the last race.
We can also assume nascar would only allow current chase tracks as the choices. It's a long season. That's plenty of lead time. It could add some legitimacy to the championship if drivers are making the choice.