I did it!! First commute today! (does happy dance)
Weather was great, considering how nasty it's been the last few days. The route worked perfectly, and there seemed to be a tailwind... I was hitting 15MPH with loaded panniers and lights. Only got honked at once when I took the lane for a few hundred feet approaching an intersection, and even that wasn't too bad. Everything went smoothly. This is what a daily commute should be!
Day 1: I'm already hooked. Just have to sweat on the way home today.