The financial affidavit is the only way the court can see what your expenses are. The child support goes by a formula, but there is no set formula for alimony. You may be able to pay NO alimony to her at all, given the affair and her working outside of the home with a very decent wage. X's girlfriend got NO alimony, and she was essentially a stay at home mother.

Of course you want to support your kids, but you shouldn't have to support a fully-capable woman who doesn't want to be connected to you anymore.

Call later if you want. Gyp and I have been there, done that, right here in CT. ;\) I don't have kids tonight.