That's a long trip to work. Some here will say to move or change jobs,but that's an individual choice with many factors involved. This cold air intake will reduce mileage, but will give more horsepower.
You've come to the right place for all the DX,CX,VX swap talk. There are many here with knowledge about that; just not me as I have a Cavalier.
Gas mileage depends a lot on the driver. I just heard today that my older sister got a brand new civic,but I'll bet anyone I'll get better mileage due to the weight of her foot.