A stiff boot with gtx waterproof liner, I’ve ran through all of these brands and they all have their high and low points depending on the area you’ll be in.
I’ve seen and killed a lot of goats with both calibers, either will do fine. What I would say is bring the lightest one because you’ll be carrying it up some steep country. It’s also going to get beat up a little so make sure you have a solid scope that won’t move around if it takes a bump here...