Hi. I see that you are still in the process of building. How do you want to insulate your walls? Do you want to do it with Styrofoam, or do you want to go with another insulation material? I've never done it myself but have been watching contractors. The professionals at https://www.almightyconstructionnw.com did the walls and sill of my suburban home. I liked the fact that I could ask them a lot of questions during the construction process. They answered any question. If you're having trouble choosing materials or aren't confident in your ability to build insulated walls, give these experts a call. I think they can advise you on any questions or take your order.