Hey Yosemite. We've killed some deer farther south in Cail in the early season when it's hot out. One buck took me about +4 hours to quarter and pack out a few miles and couple thousand feet in the 90 degree heat of afternoon. Get yourself a set of quality game bags, I like the Caribou Gear game bags, they are lightweight. You can separate the quarters into their own bag, and put the rest of meat pieces into a separate bag (so 5 bags total). Once separated from the body, they'll start to cool and should be fine for the pack out. Once at the truck drive to some ice and cool it off in coolers.
And if you're dealing with a deer sized animal, I don't like the gutless method. We eat the liver, kidney, heart, tongue, tenderloins; my friends eat the cheeks, stomach, lungs. There's quite a bit of choice meats left in the guts. Don't neglect these. I haven't killed an animal as big as an elk, so can't speak to that as far as saving time and energy with gutless method, but it still seems like a waste to me. With bears (which are a lot of work to process) I still eat organs from them.
Good luck this fall!