No specific advice, but for a short, easy commute (mine is 4 miles each way) I've found that you don't need something super light and you can save money in that regard. In fact, I'm purposefully loading stuff to give me more of a work out. I've also use an upright hybrid. At first I didn't like that it had more wind resistance and was slower than a more aerodynamic bike, but now I want my short commute to last longer, and have no need for speed. Also the more upright position really helps out my bum neck and gives me a good view of traffic.