Cool, it's fun as hell.
I'd just bring the same stuff as you'd take deer hunting or whatever - flashlight, headlamp, fixed blade, bottle of water for cleaning hands, and lots of warm clothes. It's hard to stay warm when you're not moving. Hand warmers if it's really cold. Don't forget gallon ziploc bags for meat.
Optional - sidearm if possible, a couple nitrile gloves, and that's about all I can think of
I've never really kept hog meat, but for deer I skin, then quarter them out and take the back straps and tenderloins, and put all the meat directly on ice in a cooler. Drain melt and blood daily, and I'll leave the meat on ice for 3 days or so. Add ice as needed, then finish processing and vacuum bag it. I imagine the same will work for hogs.
Good luck! Post pics