I worked this shift for two years, and it was a struggle for me for all of those two years. Some people's bodies adjust to night shift better than others. My body fought it the entire time. I stayed sick, tired, irritable, and unhappy.
Now, I have a 6:30A-3P job, and I am so happy. I make less money, but I mainly work M-F, with no holidays or weekends. I am Wellness Director/Healthcare Coordinator for an assisted living facility, and I LOVE it. I am very independent, and I love the elderly with all of my heart.
You are young, so maybe your body will adjust better than mine did working night shift. Just remember it may only be 3 nights a week, but if you work 3 in a row, the next day will be devoted to sleep. You will need a full day to recover, or your body will let you know about it. Also, you will need to stay on your same schedule on your days off, or your sleep/wake cycle will be so confused, that you will suffer ill effects. It helps to have a support SO also.
Good luck to you. I hope it works out well for your family.