If you’re able to I’d suggest waiting for -20 or colder. Between now and then touch base with the local landowners (that have hay fields) once or twice a week (ask first of course, some folks don’t appreciate a few calls). There are lots of very friendly landowners in this zone that are happy to help get rid of Elk.
Also the local F&W office has a list of landowners having trouble with Elk that they are happy to share 👍
Good luck