I think fenders are my most important buy. I think with regular stock mountain bike tires I should be fine. The amount of ice in this city is minimal in most parts (by the actual falls the ice ridiculous) but other than that, most of the city is ice-free due to lots of salting.

Since I will be riding my bike for the entire season, which means days that it might be completely dry, its probably okay for me to stick with the tires I have.