With family and a baby and unemployment can add to uncertainly, but there are reasons why you decided to get your green card .
With green card, you would definitely want to come here to the USA and live here. There are certain conditions that is required when you have a green card. You spent so much work and effort in getting green card, don't lose it. It can be hard to leave friend, family, and job to immigrate to the USA, but I am sure everything will be okay. Many of us here have done the same and are doing great. You can establish your new life here and opportunities are great here. I do not know any other place in the world that can offer many opportunities and freedom as here in the USA. I say embrace your new home and wife's parents. I am sure they be glad to help you until you can stand up on your own.