3) Child custody or residency criteria. The court shall determine custody or residency of a child in accordance with the best interests of the child.
(A) If the parties have entered into a parenting plan, it shall be presumed that the agreement is in the best interests of the child. This presumption may be overcome and the court may make a different order if the court makes specific findings of fact stating why the agreed parenting plan is not in the best interests of the child.
(B) In determining the issue of child custody, residency and parenting time, the court shall consider all relevant factors, including but not limited to:
Neither parent shall be considered to have a vested interest in the custody or residency of any child as against the other parent, regardless of the age of the child, and there shall be no presumption that it is in the best interests of any infant or young child to give custody or residency to the mother.
(4) Types of legal custodial arrangements. Subject to the provisions of this article, the court may make any order relating to custodial arrangements which is in the best interests of the child. The order shall provide one of the following legal custody arrangements, in the order of preference:
(A) Joint legal custody. The court may order the joint legal custody of a child with both parties. In that event, the parties shall have equal rights to make decisions in the best interests of the child.
(B) Sole legal custody. The court may order the sole legal custody of a child with one of the parties when the court finds that it is not that both of the parties have equal rights to make decisions pertaining to the child. If the court does not order joint legal custody, the court shall include on the record specific findings of fact upon which the order for sole legal custody is based. The award of sole legal custody to one parent shall not deprive the other parent of access to information regarding the child unless the court shall so order, stating the reasons for that determination.
(5) Types of residential arrangements. After making a determination of the legal custodial arrangements, the court shall determine the residency of the child from the following options, which arrangement the court must find to be in the best interest of the child. The parties shall submit to the court either an agreed parenting plan or, in the case of dispute, proposed parenting plans for the court's consideration. Such options are:
(A) Residency. The court may order a residential arrangement in which the child resides with one or both parents on a basis consistent with the best interests of the child.
(B) Divided residency. In an exceptional case, the court may order a residential arrangement in which one or more children reside with each parent and have parenting time with the other.