Will the meat be frozen solid when you pick it up? Do you need to fly it or are you just driving home from the processor? This changes things regarding your method of cooling during transport, the space that method needs in addition to the meat, and the limits on size/weight of your coolers. I’m assuming you’re driving?
Agreed ,I have driven numerous times from Wyoming to PA with flash frozen elk or Newfoundland to PA flash frozen moose just a few bags of ice around meat. Ice is still in melted in bags. I actually then throw the ice bags in my chest freezer at home for another day. I don’t bother with dry ice.