If the meat is really cold it helps with trimming I find. I trim a lot too. I just use a filet knife. Time consuming but worth it. FYI when canning venison all that silver skin tends to evaporate.
I like to keep a notebook. I start taking notes as soon as I start preparing, take notes through the whole process and hunting. I even take notes on the way home and when unpacking. It's easy to forget details.
One thing I find is to make a meal plan Thursday night for the next week. We grocery shop Friday night for what we need. We try to look at the weekly add and plan accordingly. We always eat before we go get groceries too.
Headlamp, GPS and flashlights all take AA. I can put fresh batteries in everything and only carry 4 spares. Never had an issue, but I haven't had to break down an elk in the dark, yet.