Also since when you started you asked for God-centered advice I thought I would put some in from the CCC:
On divorce in your situation:
2383 The separation of spouses while maintaining the marriage bond can be legitimate in certain cases provided for by canon law.176
If civil divorce remains the only possible way of ensuring certain legal rights, the care of the children, or the protection of inheritance, it can be tolerated and does not constitute a moral offense.
On your responsibility as a parent:
2222 Parents must regard their children as children of God and respect them as human persons. Showing themselves obedient to the will of the Father in heaven, they educate their children to fulfill God's law.
2223 Parents have the first responsibility for the education of their children. They bear witness to this responsibility first by creating a home where tenderness, forgiveness, respect, fidelity, and disinterested service are the rule. The home is well suited for education in the virtues. This requires an apprenticeship in self-denial, sound judgment, and self-mastery - the preconditions of all true freedom. Parents should teach their children to subordinate the "material and instinctual dimensions to interior and spiritual ones."31 Parents have a grave responsibility to give good example to their children. By knowing how to acknowledge their own failings to their children, parents will be better able to guide and correct them:
He who loves his son will not spare the rod. . . . He who disciplines his son will profit by him.32
Fathers, do not provoke your children to anger, but bring them up in the discipline and instruction of the Lord.33
2224 The home is the natural environment for initiating a human being into solidarity and communal responsibilities. Parents should teach children to avoid the compromising and degrading influences which threaten human societies.
2225 Through the grace of the sacrament of marriage, parents receive the responsibility and privilege of evangelizing their children. Parents should initiate their children at an early age into the mysteries of the faith of which they are the "first heralds" for their children. They should associate them from their tenderest years with the life of the Church.34 A wholesome family life can foster interior dispositions that are a genuine preparation for a living faith and remain a support for it throughout one's life.
2226 Education in the faith by the parents should begin in the child's earliest years. This already happens when family members help one another to grow in faith by the witness of a Christian life in keeping with the Gospel. Family catechesis precedes, accompanies, and enriches other forms of instruction in the faith. Parents have the mission of teaching their children to pray and to discover their vocation as children of God.35 The parish is the Eucharistic community and the heart of the liturgical life of Christian families; it is a privileged place for the catechesis of children and parents.
2227 Children in turn contribute to the growth in holiness of their parents.36 Each and everyone should be generous and tireless in forgiving one another for offenses, quarrels, injustices, and neglect. Mutual affection suggests this. The charity of Christ demands it.37
2228 Parents' respect and affection are expressed by the care and attention they devote to bringing up their young children and providing for their* physical and spiritual needs*. As the children grow up, the same respect and devotion lead parents to educate them in the right use of their reason and freedom.
2229 As those first responsible for the education of their children, parents have the right to choose a school for them which corresponds to their own convictions. This right is fundamental. As far as possible parents have the duty of choosing schools that will best help them in their task as Christian educators.38 Public authorities have the duty of guaranteeing this parental right and of ensuring the concrete conditions for its exercise.
BTW- the parts I wanted to point out in the second part were already italicized - I didn't do that - I just copied the original formatting- God sometimes knows exactly what we need to see before we do.
Still praying for you and your children