Anyone's input appreciated, especially Dennis', if you have time.
Here are the numbers:
my annual income=80k (working 2 jobs, about 70hrs/week)
her annual income=4k (working lunchroom at school)
Married 13 years
She helps out in the lunchroom at our kids' school. This way she can see our kids, ages 11 and 9. She is capable of earning a living on her own, but refuses. During the marriage, I allowed her to maintain her extremely limited part-time job at the school so she could care for the kids when they came home. I worked two jobs and never got to see my family to make ends meet (i.e. support her shopping habit). Recently, I asked her to get a job elsewhere and she refuses(says the kids need her there at the school for 'emotional support') She's certainly capable of working elsewhere full-time.

She wants me to pay $900/month in child support and $1300/month in spousal support for 4.5 years. She also wants me to take out a life insurance policy on myself payable to her to cover the spousal support if I die before the 4.5 years is up.

I just quit working my second job because my doctor says if I don't slow down, I'm going to have serious medical problems. So my income is going to go down to $60k annually. If I pay these amounts, I will have maybe $800 per month to try to live on just working my primary job. This is supposed to pay for rent, food, gas, etc. Also, she moved out and took the kids and is living with her parents, so it's not like she is out on the street. I can see paying some spousal support to her until she gets on her feet, but not like this.

Can I claim she's voluntarily underemployed? Impute some kind of income? Count her living with her parents as cohabitating?

The figures listed are what's in her 'separation agreement' that her attorney wrote up. Needless to say, I haven't signed anything. I was really hoping to file a dissolution instead of divorce. I don't have an attorney but looks like I'm going to have to get one. She thinks I will just cave to whatever she wants to avoid litigation.
What will a judge order me to pay for spousal support?
Is this fair?
Thanks for any help.