I don't hunt elk but I carry 6. But I do hunt with a recurve so missing and needing more arrows is almost a given. I do feel good being able to carry a couple blunts and still have 4 broadheads though...
You could always get a 5. I use a tight spot 7 for whitetail because I need a couple extras for trash arrows for feral hogs. The tight spot 5 and 7 weigh the same. You could always choose to carry fewer arrows, but only if your quiver gives you that option.
Tight spot 7 arrow with 5 arrows normally in it. If backpack hunting I would carry 2-3 arrows in your pack separate. Don't need to have a fall and bust all the arrows in your quiver and be done.