Well... My mom is 1 with just 1GB (not included in my bill). I have my G3 being unlimited, soon will have an iPhone 6 with probably at least 3GB if not unlimited. But my plan was to include my grandparents as well this year... so while yes right now it hurts a little, but future wise it will go down from me alone. I'd REALLY prefer to keep my Framily if at all possible.
So with that said I'd have 5 right there... $35 for each line, Unlimited for my G3 and probably 3GB for the iPhone, right now $16.66 for Easy Pay of my G3, then whatever for the iPhone (assuming $20-22), then my Tab 3 on the $10 plan on a 2 year contract. Oh and an 18% discount too.