It will be a very tough career with kids I think . Shift work is part of it. Earlies (7am start), lates (3pm till 11ish) and nights. I think you willl be able to do agency work when you finish but that isn't all fun either as you get sent wherever they need you, and you will find you get less respect from the permanent staff (also probably the c**pier jobs).
But if you want to do it, then go for it! They certainly need good people in nursing