Justtake the smaller ones and don't worry about it...

(jk)
I have heard of people butchering them and puting the meat in a cooler or fridge for a few days if the temps are to warm outside. My doe from this year was in cooler for a few days (down state hunting). I have never put any of my steaks in milk.
IMO the trick to a good steak is do NOT over cook it. If you over cook them they can get pretty tough.
I thaw out about 6 butterfly (backstrap) chops and put them in about 1/2-3/4 cup of worcestershire sauce and a couple tablespoons of soy sauce, then just sprinkle in a little bit of garlic salt. Put it all in a gallon zipper bag. Let merinate a 4-5 hrs, flipping them once in a while. Cook to about med to med rare....[8D]
Don't take long for them to disappear..
I'm sure there are people on here that may help you out on how to and how long!!!
Merry-Christmas