getting 3 bloodlines would mean you each get to make your own family, you should only get 1-2 bloodlines + tiers, one for you and your wife.
You both get your own family and family name, you guys are also both in exposition (3 month early access world building phase). During this phase you and your wife could marry one another conjoining your families and have children through contract, this would allow you to have kids so by the time of official launch you will be on your way to allowing your actual(IRL) kids take over you and your wifes NPC children.
i do suggest locking your family so nobody takes over your npc kids, you can lock and give a code to your actual kids to allow them access to the family npcs.