re: Butchering/Storing a Cow advice

I split this one with my in laws about 60/40. I have an old school fridge in my garage that some is kept in and the rest is in my side by side at the office. I have a total of about 25 cubic feet of freezer space local that can keep the normal frozen foods and another 100# or so of beef. The rest goes to the camp where we have another 20 cubic foot chest freezer.
They say to figure one cubic foot for 35# of meat, but I think that's got to be packed solid. I'd say 15# per cubic foot + whatever else you normally keep