Hi Alex, maybe you can try to clarify 家 and 家庭. For example, 我的家有七个人, it is fine to use both 家 and 家庭; for 我的爸爸，妈妈，两个哥哥，嫂嫂，我的女朋友，和我, if you are talking about living together, then you can write 家裡住著 at the beginging to be 家裡住著我的爸爸，妈妈，两个哥哥，嫂嫂，我的女朋友，和我; for 我的家住在很远, if you are saying you live by yourself and you live apart with others then it could be better as 我自己住在離家人很远的地方; for 我的狗很小可是很好, the adj."很好" might come from "good", in Chinese, "good" for dog is 乖. So, you can write 我的狗很小可是很乖. By the way I am learning English speaking and writing, maybe we can be language partner, or exchange language to each other!! I am native Chinese speaker, living in Taipei, Taiwan. I can write both simple and traditional Chinese.