I have the biggest one GE makes in my garage. Bought it used, that was at least seven years ago, and it runs like a champ.
Hahhahaha, that makes sense with your crew! You wouldn't be able to fit many meals in a 3.5 cubic foot freezer!!!
I'm actually leaning towards a 5 cubic foot. The 3 would be enough for now, but I figure I'll go bigger just in case the crew outgrows the smaller one