Get stronger on big compound lifts. If you have more time and energy after doing what you have to do to build your compound lifts, then do some isolation work to get all the individual muscles. If you have extra time after that, then finish with high rep stuff (epsecially on the shoulders and legs) to get a huge pump.
The mistake people make is leaving out the very first thing, building the compound lifts. Once you get nice and strong, then you can reasses your training and, if you so choose, shift your focus to hypertrophy.
5 rep sets are very good. Personally, I stick to 3 or less usually, because it lets me push the percentages even higher. That can take it's toll on your body though.
People don't seem to realize that the best bodybuilders in the world still try to build their numbers on compound lifts, even though on the surface it seems like these numbers have nothing to do with their end goals.
Current PRs at 242- 495, 345, 585, 1425