Well you know how time this challenge take, it's not easy dealing with real life! I've give another try :)
By the way I read something on your blog and I have more question (please don't hate me XD).
How do you change household with nraas story progression?
And when you change to a new household, you give to the previous household the "non active RKC" caste and remove the "active family" caste, how do you do that? Before you switch the family?
Because I see that I can manage the nraas option of a specific residential lot only If it's the active family!