Typically, four times per week:
The rep vs. heavy stuff simply refers to the primary exercises; assistance and prehab exercises are done 5+ reps (even on heavy days). I'm a big fan of supersets, compound movements, and not messing around with trying to isolate muscles.
I think a lot of people overthink hypertrophy; diet and lifestyle factors are far more important than worrying about minutia in training programming. I'm all for appropriate use of different methods such as drop-sets, isometrics, and eccentrics, but I think many people get too caught up in flavor of the week stuff. Take a look at how great the results are with Chad's programs; you don't see him straying from what's worked in the past just to be different, do you?
"Bart, with $10,000, we'd be millionaires! We could buy all kinds of useful things like...love!"