Even a 90L is just 3 cubic feet which most likely would mean you would be standing the meat up on it's end.
No fan is needed if it is a frost free unit.
Here's an idea that worked for my b-i-l. He went to a locally owned appliance dealer and asked about any of their scratched and dented stock. He got such a great deal that he bought a freezer plus a refrigerator as spares.