Last semester, there were four families in the dinner co-op (all had at least one student in the family and one or two kids - very similar to our family), which meant I was only cooking once a week. We were only required to make a main dish, but often provided a little something else. This ended up being a real life saver last semester when I was trying to juggle working, school, and family. I only had to cook once a week (it was a big job when I did it, but not too terrible) and I was able to choose a day when I had a little more time.
I usually choose a recipe that I can make in one big pot. This one happened to be an exception and I needed to use my two big stock pots. To manage all the cut produce, I try not to think too much about the dishes and use bowls and cutting boards (I own 3) to keep things separated until they need to go in the pot. This week's dinner happened to be meat based, but we just as easily exchange vegetarian meals and keep everyone happy and full.