It is vital that you and your husband are both on the same page. The method of discipline isn't as important as the CONSISTENCY. No doubt, there are going to be bumps in the road. There always are when it comes to ALL families, not just blended families. This is totally normal. But one thing that will certainly help tremendously is consistency and you and your husband working as a team. Children can be quite sneaky, and are very good at playing parents against one another. Keep the lines of communication open constantly. Until each child has had the opportunity to become well acquainted with the new step parents, it would probably be best if discipline is only between parent and biological child. If there are disagreements between you and your husband regarding the children, and there will be, do not discuss them in front of the children, EVER. You and your husband should only present a united front to the children. There will be disagreements between you and your husband regarding the children. Again, this is normal, but make sure they are not discussed in the presence of the children. The children should all be taught to respect his/her new step parents, and the children should be taught to respect one another. While the step parents should always make it clear that they are not there to replace the biological parents, the children also need to understand they are to respect them as adults and leaders of the family. If the girls have never lived with boys and visa versa, each needs to understand and respect boundaries such as knocking before entering, sharing bathroom space, etc. Make sure that your extended families do not meddle. This never helps. It is okay for you to seek advice, but they should not try to become overly involved. Blending families is not always easy, but it is certainly possible, as there are many very happy blended families. Keep your expectations high and positive, but also reasonable. There will be difficulties, so expect them. But also know that with the right love, support, patience, hard work, and guidance, things usually work out just fine.