Lander is not too far from most of 100. There is a processor in Lander, Shane Leshner who does a really good job. One animal at a time, no bull grind. Nothing to fancy just a straight cut. He trims it well. Wraps in plastic then vacuum seals. He has done a couple elk and deer for us and have not had one complaint. The others I know about in Fremont county, I would let it up a dog.
Also I live in Lander and will be in 25/27 hunting this fall. If you need anything f, water, a garage to fix a vehicle, you get stuck, ex. Look me up and I will do what I can to help. My cell is 970-629-8922.
Also I personally would focus on Oregon Buttes, Antelope Hills area own to Jack Morrow area. As such there is some really nice camping available just out of 100 around South Pass/Atlantic City just off the highway. Since it is on the highway and the county road into Oregon Buttes is nice, you would be like 10/15 minute drive from camp to hunt. But you would have trees, fire wood etc. also if you like fly fishing the Sweetwater is a great stream, but Green River is awesome and close!!!