When removal is challenged under N.J.S.A. 9:2-2, we hold that to establish sufficient cause for the removal, the custodial parent initially must show that there is a real advantage to that parent in the move and that the move is not inimical to the best interests of the children. . . . It is only after the custodial parent establishes these threshold requirements that the court should consider, based on evidence presented by both parties, visitation and other factors to determine whether the custodial parent has sufficient cause to permit removal under the statute. . . .
[71] The first factor to be considered is the prospective advantages of the move in terms of its likely capacity for either maintaining or improving the general quality of life of both the custodial parent and the children. The second factor is the integrity of both the custodial parent's motives in seeking to move and the non-custodial parent's motives in seeking to restrain such a move (e.g., whether the custodial parent is motivated by a desire to defeat and frustrate the non-custodial parent's visitation rights and remove himself or herself from future visitation orders or whether the non-custodial parent is contesting the move mainly to impede the custodial parent's plans or to secure a financial advantage with respect to future support payments). And the third factor is whether, under the facts of the individual case, a realistic and reasonable visitation schedule can be reached if the move is allowed. In a given case, evidence of any of these factors may be used to militate against either the threshold showing of the custodial parent for removal, or the arguments of the non-custodial parent against removal.
[72] Since the non-custodial parent has the necessary information to demonstrate that an alternative visitation schedule is not feasible because of distance, time, or financial restraints, we place the burden on that parent to come forward with evidence that a proposed alternative visitation schedule would be impossible or so burdensome as to affect unreasonably and adversely his or her right to preserve his or her relationship with the child. [Id. at 56-58.]