My sitch is pretty much the same, my wife is also a sahm. She did go see an atty I have not yet. I had the same fear as you. I work with an atty at my job and he pretty much filled me in.
The atty she saw basically told her a fantasy based on her lies to him about me always working and never home.
What it comes down to is income. I make a good size income and she makes 0. Our state has a child support calculator you just punch the numbers in and that is how much you pay.... it is shocking I must say. As far as the house, in my state I can buy her out and keep it I do not have to sell it.
One thing your wife should try to understand is that she will not be able to live on the child support While it is allot of money it is not enough, so she will have to get job unless she has other means.
