While we specialize in venison we have done several other North American big game animals including moose. All the one's that we've seen, including guided hunts have been skinned, broken into primals (quarters are to heavy and bulky to handle), and packed in game bags. The game bags serve to keep the blow flies from laying eggs on the meat, and also keep it clean.
   
    If you have the knowledge to bone it out, that would greatly reduce the weight. Otherwise pack a good hand meat  saw and some decent boning (6"), and butcher (10"or 12") knives. Be sure you have then largest coolers you can get or make your own with plywood and thick styrofoam sheets. The neatest set-up I've seen was several hunters that went to Alaska had a large trailer with three chest freezers and a generator to run them. Their meat went right into the freezers, and held well for the trip back to Michigan. At the nightly stops they would plug in the freezers to keep the meat frozen.

    Keep in mind you'll be skinning and breaking it down while it's laying on the ground so you may want to bring some cheap tarps along to lay the primals on as you break it down.
    All I can tell you is that moose are very BIG! We filled 42 grocery bags of boneless meat out of two moose we did a few years ago.

    Here's a comparison of a moose sirloin tip and a venison sirloin tip. In case you can't read the scale, the moose tip was 15# and the venison tip 2.25#. That's just the sirloin tip not the whole round!

Good luck, Dave