hi, that's awesome, myself I love big family. I know a friend who have 3 boys and 1 girl (the youngest), he is so happy with them and always for him weekend are more exhausting than workdays. of course lots of pressure and the mother is not working, they just distribute the tasks between them, like in studying, the dad takes math and science and mom takes the rest :P. of course it is hard specially when you are far from your family and alone to raise 4 kids and take care of every single detail for each one of the, however you know your self better if you can do it or not..
when I will be able to afford for a big family, I will not think twice to have 4 kids.