I understand that there are many different ways to do your castle. Heavy resource production or Prime crystal production. Some might even forgo all that and do nothing but libraries.
8 cabins ( can prolly fit # 9 in there some wherre)
3 prime distil
3 talent forges, I switch these out with windmills when I am low.
3 lumber mills
1 clan house
1 dog's house
1 cat's house