As you suggested....I would keep an eye on the available seats. I dont see many empty seats when I fly anymore. They seem to have plenty of empty seats and then the day before, or day of, it books up. I've seen that several times in the last month.

I think you can make the connection as long as your flight arrives on time. Delta is pretty good about that in Atlanta since everything connects through here. Keep an eye to see your gate and terminal. It's possible it will change but I'd breath easier knowing you dont have to change terminals and use the tram.....which is quick but consumes time.

My wife is on a plane now as she flies several times a week travelling for her work. I'll get her input on this also and let you know what she thinks about this.