When your girlfriend figures out how much of your money is going to your ex wife, with nothing left for her, you won't have a girlfriend anymore.
Here's a NY child support calculator.
https://www1.nyc.gov/site/hra/help/c...alculator.page
With $85000 gross income, you'll pay $19125 in child support. In NY that can go until the children are age 21.
As for alimony, if your wife's income of $4500 per year wasn't a typo, you're going to get nailed for that and deservedly so.
My prediction: She'll get the house, you'll pay the mortgage payments, you'll pay alimony and child support, probably have to buy health insurance for the children, maybe for their mother, too. She'll get the good car, you'll make the payments, you'll drive a beater.
When all is said and done, you might have enough money to live in a one room efficiency apartment.
There's nothing wrong with the "system." You'll be getting what's coming to you.