I've worked 12.5 hour long days for the last five years in my current job. It gives me the perfect work life balance. It works well for childcare, I have a number of days off where I can do as I wish, such as the time I spent volunteering for this site until last Xmas. In comparison, when I worked in theatres and had shorter shifts, my work life balance was ****. End up stuck in work late due to wards faffing about accepting patients from recovery etc.
Being a student nurse is hard work, along with being on placement full time, you have a load of competing priorities as well, such as assignments, exam prep, portfolio work. It gets easier on qualifying. You'll still have some stuff you need to do in your own time, such as course prep, revalidation, etc, but you'll have a lot more free time.