I don't have a walk in cooler.
As to aging...lots of debate on that issue. From everything I've read and experienced first hand, how long to age is up for debate.
As long as it isn't cooled too fast, IMO/E aging game should be no longer than 3-7 days depending on a whole list of variables.
Because wild meat like elk, moose, deer, antelope are not covered in fat like a beef, aging times are going to be way shorter. The meat dehydrates fast on leaner animals, too fast IMO/E. The amount of loss via dehydration and additional trimming required is counter-productive to any gain in aging.
The animals I shot in Wyoming this year were all aged for 4-5 days with the bone in the quarters. In warmer weather, and when cooling is slower, aging time is shortened and I don't think additional aging time will gain much of anything.
Lots of theories on care of wild meat...but I believe that 3-7 days of "aging" is more than enough. Cutting all fat, silver-skin, tendons, not cutting any bone, etc. will yield a lot better finished product. How the meat is cooked also plays a huge part in the final product, probably as much or more important than aging.