As someone who was completely emaciated by the end of boot camp (always got kicked out of the chow hall), I think the most valuable thing you can do is LSS. This will make you metabolically flexible, and will keep you from wasting away. Building a ton of strength is going to be a resource sink, but ...

Rear loaders (I have an Eberlestock Halftrack) are awesome for this. It has internal flaps that can clip and synch down that allow you to put a weight at any height you want on your back and keep it there. The rear load makes situating and accessing things very easy. This works especially well with ...

If I am understanding your question, you are asking whether running 200s with high intensity and rest intervals would be better than LSS for improving a 2 mile run time. My understanding of the book suggests that LSS would be more appropriate due to training the exact energy pathway as you'll use in...