Since this will probably be a once in a lifetime hut for me that I have been saving for for over 2 years and the fact that I am almost 55 years old I think I will just take two guns and be done with it. My 300 RUM is a Remington Sendero with a custom Douglas 28" barrel and brake, Nightforce 5.5x22x56 scope, Jewell trigger, etc. that shoots the 215 Berger at a legitimate 0.5 MOA at 1000 yards.
Saving for a while...
once in a lifetime...
I would say plan for the worse case scenario. That means 300 RUM with a suitable bullet for almost any range/shot offered, and take a second rifle.