I am also a known shipper with Alaska Air Cargo. I live here in Anchorage but had a couple buddies come up last year from the lower 48. This is a caribou plus some extra meat and fish that I packaged and sent back to him in Nashville TN. Cost was $192.00. Process is pretty simple.
Once packaged you just drive to Alaska Air Cargo, place it on a pallet, they weigh it and place in cold storage, you pay and you’re good to go.
Not sure what your plan is for meat while you’re up there. It can get warm in Aug. There are some outfits up there that will allow you to store meat in their freezers. I believe a couple of the airboat services that operate off of the Sag will allow it for a price and possibly somewhere up in Deadhorse. I know, at least in Anchorage, Alaska Air Cargo places everything in a freezer while it’s waiting to ship.
They were also fortunate that I live here and was able to take their meat to the processor and have the time to drop it off at air cargo for them at a later date. That could complicate things depending on your timeline.