If your stbx is not gonna be available for much of his 30%. You should ask for full custody with visitation. This will help you financially in most states.
Don't short change you and your kids financially. Your stbx is deep in the fog of an affair and will totally misuse any money he has
---- M 39 H 35 D5,D4 M 4 T 9 ILYBNILWY 5/18/11 Left 7/11/11 Divorced 12/1/13