Not trying to be spoilsport or anything and you know I am almost in the same boat as you, but do ask the senior members in the forum. As far as I know, you've to give a convincing reason during eAPR why spouse and dependent children Not Accompanying, and it cannot be just to increase CRS. Also, later when you file your spousal sponsorship, this question may come up again. I know that
@vensak have some knowledge and opinion on this.
Whatever you do, just take an informed decision, immigration is a long-term life-changing activity.