Going back to school can be very tough after a long break. It is good you have the passion. Here are my thoughts.
Scholarship is a very tricky thing, it depends on various factors like school, funds, scores, academics, etc. It may be difficult to get it along with I20, just because schools once they award it, they have to wait for you and, if you do not show up, then only they can allocate to others. With tight budgets in schools these days, it may be difficult…having said that, there are many students who get scholarship as well. Read Cost of Living for MS in USA
It maybe a little more difficult because, you may not get all the help you need in US as there are less family members around. But, it is possible, you can always have a nanny to take care of the baby, when you go to school or work on your homework. Maybe your spouse can help too.
All in all, if you are passionate, I suggest you should go for it. Recently my friend completed his MBA, he has a 6 year old and 2 year old, his wife works full time, they were able to manage with nanny and make it happen. Don’t give up just because you cannot balance.