I was pretty close then with my 3 x 150s, but I wasn’t thinking about a cape.In all of my research, I’ve determined, and been told, to plan on 500qts for all meat and cape for Shiras and canada.
If frozen i can’t imagine needing any ice for a long long time.I have used a 200 & 150 qt coolers for Eastern Canadian moose for years. Your better off using a few bigger coolers with extra room for ice.