On the NRaas front, which mod(s) you want to use to create, take apart, and play such households forward depends on how you were planning to do these things. Many of us have all of these mods in play for other reasons anyway.
http://nraas.wikispaces.com/Which%2...FAQ#Overstuffed
Note that actively being played households over a certain size will add a lot of stress to the game, so after a point depending on the world being played, how far it has progressed, and one's computer system, there will likely be noticeable performance hits.