Balancing family and work

Let me congratulate you for you decision!!! Excellent choice! Question: Will this be a undergrad degree or graduate degree?
If its a undergrad degree (Bachelors degree)your first 2 yrs wont be a problem to work and study but the last two are very heavy and time demanding.
If its a graduate degree (Masters Degree) its a bit more relaxing bc of the nature of the programs. Most schools know that their students are already professionals and the programs are flexible. Professors adapt more to the student than what its for the undergrad level where the student have to adapt to the professor.

The way I interpret your question sounds like this is generally aimed towards when you graduate. I am currently working as a field construction engineer, and I do work about 50-72 hours a week depending on what is going on. I've got 3 small children and a husband. Is it hard? Yes, but it is not impossible. We try to make every minute count. There are people at my work that are managing a master degree while working and have a family of their own as well. It is hard, but not impossible. Like everything, you need a plan on whichever way you go. Best of luck.