Oh, I'm so sorry for your loss, I can not even imagine how heartbroken you must be. You have my deepest sympathy. We will be praying for you and your family in this devastatig time.
My chicken house was a pre-manufactured barn building, not a custom job, We framed 1/3 of it and put chicken wire up to make a seperate 'hatching/brooder room for the chicks. I am going to put hardware cloth over the window, because my dog killed a possum in the yard the night after something ate one of my guineas throat. When I put the hardware cloth over the windows I will fasten it with washers and screws. I'm not a builder by any means, but you will be able to find alot of good ideas to finish your beautiful house. Again, I'm so sad for you, Please be comforted by all the genuine sincere Best Wishes you are getting here on the chicken board.
God Bless you and Your Family,
Kim in Ky.