Simple Leg Workout

I changed my workout routine recently, I felt like my results were starting to plateau because I had been doing it for a few weeks.  But this is a simple leg workout I used to do a lot and I really like it.  I'm not putting the weight I used because everyone is different, but I try to always lift as heavy as possible.

15 min arc trainer, resistance 65

Plie Squat 3x15
Goblet Squats 3x15
Pulse Squats 3x15

Front lunges 3x25
Reverse lunges 3x25
Scissor jumps 3x25

Leg curls 3x15
Leg Extension 3x15
Calf Raises 3x15