I've been experimenting with doing a Full Jump after the 3rd guard, and it seems maybe faster? It's hard to tell. I also started to use a Medium-length Jump after the 2nd to last guard, since on faster pace you will always bonk the wall even if you release Ninja Run before landing (unless you do it super early in the air). Otherwise it's just slightly faster, so I don't think anything I did really matters in the end.