A couple of thoughts:
-3 days means probably a deadlift day, squat day, and a press day
-for time's sake, pick a rep scheme, maybe more reps for girls, and superset each lift with another exercise that is somewhat taxing (i.e press and burpees).
-superset 2-3 solid accessory lifts, focusing on antagonistic points of interest, be they strength or aesthetic. Complexes work too. This ends up being very similar to a short metcon.
Hope this helps.
S. Emile Hughes
Current Lifts (December 2010): BW 166lbs; 285lb Bench Press; 315lb Squat; 175lb Overhead Press; 405lb Deadlift; 205lb Power Clean