I have 3 children, 12, 7 and 2 next month. I have been on my own with the three children since May, although financially I was on my own all through being a parent, every guy I've picked I've ended up looking after them, they had no job etc....(what was I thinking!!).....and i work 16 hours a week too.
It is hard, dont get me wrong but also very rewarding at the end of the day when you have done everything by yourself and done it well.
An example of my day when I work is I get up at 6am, get daughters bottle and a brew for me, have a bath myself and bath my daughter, get older daughter and son up for school....they sort themselves out! Then we are out the door by 8.30am......I take my daughter to high school, then my son to primary school, then my youngest daughter I drive to her dads mum who takes care of her for me whilst I work, I nip home, put washing in, do housework, then get to work for 10am. I finish work at 3pm, my youngest daughters nana is waiting outside my work with my youngest daughter, I then drive to my sons school and my eldest daughters school to pick them up, then come home, make their tea, get all the clothes ironed ready for next day, my clothes, youngest daughters clothes etc, do dishes, get my youngest daughter to sleep for about 7pm. When shes asleep my other two do their own thing in their rooms usually, I make my tea, watch a bit of tv and then go to bed with my daughter and watch some more tea, usually get to about 10pm and then I'm out cold, knackered!!
Its all about routine! You will be fine. Financially, just keep a note of everything you have to pay out that week, writing everything down is the key I think.