Any women paying their ex alimony?

My stbxh is hoping I'll buy him out of the house, pay him alimony, and pay child support. I'm so scared I'm going to be broke with what housing costs. I make 120k, he makes 75k. He has more education but has chosen to take lower wage jobs & even didn't work for over a year because he was going through depression. I worked 2 jobs to help put him through grad school. I will likely be the primary caregiver since he travels for work a lot and I already do the majority of tending to our 3-year-old. I also pay for my child's health insurance & daycare.

Any stories people can share? Did you end up paying alimony to your spouse, particularly if you are the primary caregiver?