I'm headed back to Africa in about a year. This time I'm taking my bow and going after Nyala and sable as my 2 trophies, plus whatever might trip my trigger. I shoot 29in at 65 to70lbs, looking for a quality arrow for this hunt. I'm planning on using tooth of the arrow broadheads. I currently use 350 cx reds for deer, but I know they are a light arrow. What do you recommend??? Axis 4mm???