I would give consideration to a second set of wheels and tires that provide more shock absorption, puncture resistance, and traction on wet surfaces. Also add fenders to keep clean on the commute.
For my part I would never be out on city streets after it is dark and hoping that ALL the motorists are paying attention while driving home and do not hit me from behind or turn in front of me or open a car door along the roadway. A friend commutes every day and has been hit on average once every 6 months. But then he rides in the USA which is very hostile to bicyclists and to pedestrians.