We are made in the Image of God, and we are daily, hourly, weekly faced with decisions. The Morality of our decisions depends upon sufficient reflection, study and seeking of counsel.
Muddling through Family Planning with no direction from the Holy Bible is not my central theme. There are many priciples of Stewardship in the Holy Bible. There are many instances of Sacrifice in War and other instances of Honor. Jesus preached the principle of sacrifice in the Parable of the Wheat and the Tares. Jesus acknowledged the general principle that all parents desire to give their children abundance and gifts.
So balancing the factors of sacrifice now, for better things later, may apply if work is being directed toward being able to better provide for an additonal child, if Family additions are delayed.
It is sad that so many Pastors have been persuaded to adopt the Christian Right Position, so seeking counsel in a Christian Church is almost always the same as seeking advice from the Catholic Church, on Abortion. The Christian Right organizations visit independent Christian Churches regularly, and keep all minister propagandized.