Well, the reality is that if you have the only real income, you're going to be paying child support. She's probably cheaper than daycare, but you might find out what that would cost.

She also is going to have to learn to support herself financially more, as alimony is not so common any more, and usually shorter term from what I'm hearing. Also, it is one thing for you to support your whole family financially in one household, but the duplication of expenses in maintaining two households because of her wish...

As a former stay-at-home dad, I'd point out that she was doing a lot of unpaid work for your family, and helping her to find a career (say while she goes to school) seems to be to be a fair & reasonable expectation. It is a bitter pill perhaps, given the hurt she has caused you, but something to consider.

Me: 50 W:43
S6, S3
M: 12 yrs. T: 17
M is bad & Not happy Bomb Mar '14
S 5 Feb '15
D Bomb 13 Apr '15 (but "no hurry")
DB Coach May '15
Wants proceed on D Aug '15
Starting 1-on-1 negotiations Sept '15