I don't hunt Elk here so don't need to process it out in the field. But I do travel a long ways on foot to get to some of my favorite stands. I have a nice Jan's sport with frame I stuff my hunting clothing into along with a pair of hip waders so I can cross one deep creek, carry a flat plastic sled for sliding the deer once down.
I used it once on a hiking camping vacation with my daughter's family. Plenty of room for small dome tent, extra clothing and some dry meals. It has all kinds of straps for carrying sleeping bags and mats. Also has so small pockets I carry snacks in mostly.
Just picked up a back pack for varmint hunting. Carry's the call and extra SD cards in small pockets for the caller too.
Your pack looks like it should do every thing you want it to and that is what is most important it does the job.

Al