I don't know what the standard is in Ohio, but here in California (I know, we're all pinko, tree hugging liberals), 50/50 custody is the default--given no special circumstances. I think it would be a real disservice to your kids if the court were to award full custody to your W. Your kids should not be raised by a 4X married, sweaty troll.
While it won't restore your marriage or your family to what it was before, you might get some cosmic justice out of this. You certainly deserve some.