To my way of thinking higher reps do work but only after you are already up to some pretty dam heavy weights. I am not necessarliy talking about this comp but more in general terms. I think most peeps like fully 85 out of 100 would be best served to keep hitting the 5x5 back to back with some slight modifications and then move on to higher reps after they get to moving heavy ass iron.
That would be the 1 year program.
But of course for this comp you dont have the luxurary of that kind of time frame. So for this make liberal use of the 10x3, pre fatigue and anything else you can think of.
Good luck bro.