Stepchildren inheriting - what setup do you have/suggest.

You need to see a family law attorney who specializes in wills and trusts. I get the idea you're tinkering with and yes, you can tailor your will (s) or trust to make sure all the kiddies are taken care of. You need to consider things such as who dies first and what happens, or if both of you are in a car wreck, he dies first and you die two weeks later what will happen? Eventually, there probably will be grandkids, so what are you going to do about them?