RE: What would you do?
That is the only way I would go, is to find an outfitter that specializes in that animal. Then research the animal, outfitter and terrain that all of this is located. If they are a retutable outfitter they should be able to get you into Bow range. That is why they are the outfitter.
If all else fails, bring the rifle and drop it from hundreds of yards away. Either way I bet it would turn out to be an awesome story to tell grand kids.