You will probably end up just hunting whitetail if I had to guess. The times I have hunted Idaho whitetails (albeit never in unit1) the whitetail were up even higher than the mule deer in November. I dunno specifically where the mule deer winter up there but I'd guess not way up in the high country. Just my thoughts based on what I've personally seen. Hope somebody can elaborate more. Good luck and post your pics if you do go.