I have two concerns when it comes to increasing muscle size. When I lift, my sets are usually 1-2 warm up sets and 2-3 working sets so roughly 4 sets with 6-8 reps. Doing so my strength has boosted but size gains are not in comparison with strength gains, although size gains are decent. The exercise that I perform consists mainly of compound movements. So my two questions are:

1. To cause muscle hypertrophy, what rep and set range should I be looking at?
2. For muscle hypertrophy should I be including isolation exercises, if so should they be done before or after main compound exercises (bench press, squat)

BTW: I have been more about gaining strength since surgery, but now that I am at my comfortable strength range, I want to switch to bodybuilding.