If you're studying exercise science, its time to bust out that Essentials of Strength and Conditioning book that will become your bible on the way to passing your CSCS and see what it has to say about integrating power and high neural effort movements into your workout.
No offense, but you shouldn't be spending three hours in the gym at any one time anyway. Much less O lifting (seeing as how you aren't on Olympic team).
Depending on how you divide your workouts, more than likely you will be placing the Olympic movements first in your workout. If you do total body work then put the O lifts first and perform cleans/clean variations and snatches/snatch variations on alternating days. If you break up your work by either upper/lower or B/C--B/T/S--Legs then put the O lifts on leg day.
No matter what, if you are performing these lifts for Oly lifting benefits and not a warmup, you shouldn't be doing reps of more than five (one to three would be better). Give them time and be consistent, constantly improving technique (meaning bar speed) and you will be happy. Remember, its better for athletes to "jump out of the gym" with 135lbs than to pull 185lbs slowly.