OP,
I also bought my car under similar circumstances. I'd driven manuals before, but hadn't in a while. That's one of the reasons I went for the sport package. The syncro rev helps while you're shaking off the rust/getting a feel for the car. I drove mine over and hour and a half home from the dealership and did fine. I wouldn't be scared of mastering the operation of the MT.
That being said, if I was in heavy bumper-to-bumper traffic every day, constantly stopping and going, I'd give the AT some serious consideration. (Actually I may consider a different ride...but that's beside the point.)
So basically I've given you no strong persuasion in any direction. You're welcome.
