Constraints in time -and most importantly- adequate training space, have forced me to train only the squat, bench, and deadlift (following your set and rep prescriptions, Mr. Rippetoe) obviously omitting the press and power clean from the program. What are some potential dangers in training only the 3 movements listed following a heavy, 3 sets of 5 reps across approach (1x5 for deadlift) on a (non-consecutive) three-day-a-week program?