I did professional guiding and outfitting for about ten years. Lots of African/European game, of course some of which my hunters had never seen before. To hear their descriptions of certain critters was always a real highlight! It's easy to see how a lot of people could be seeing what they want...
I ordered 2 different Larue lowers and was not impressed. 0/10 would not recommend! Maybe the uppers are a completely different story, but I suspect not.
It's acceptable to complete the reps in between miles, however you like. I did a 5/10/15 scheme for 20 sets. Then the 2nd mile. But yes as quickly as possible!
Forward him this thread! He'll have no idea which one of these you've picked. Although I do second the doggies. I have 2 Presa Canario, they don't miss anything and flip that switch so fast. Would recommend!