[quote=@Oliver]
If we're allowing extended family, would a nephew/cousin be allowed? 
As I myself am 13 and not particularly adept at playing older individuals, I was thinking between the ages of 8 and 14. That's usually the range I'm comfortable with. 
Also, are we going to establish the wealth/financial status and religious/political beliefs of the family? 
[/quote]

If it helps, I think the family is supposed to be middle-class.