Workout set up...

[mbyc09]

Im new to this site but have been lifting on and off for the last couple of years (a few months here and a few there). I made these new workout, i wanted to see if i could get suggestions on it. I workout 4 times a week, tues/thurs/sat/sun. I start with #1 workout then #2 workout then #3 and repeat back to #1. This is what i have:

Workout #1
(Legs/Shoulders) Total 7 sets each

Smith Machine Squats
Front Delt Plate Raises
Seated Leg Curls
Upright Barbell Rows
Leg Press
Medicine Ball Twists
Seated Calf Raises
Ab Crunch Machine
Reverse Incline Flyes
Hanging Leg Raise

Workout #2
(Back/Biceps/Abs) Total of 7 sets each
Pullups
EZ Bar Curls (Inside)
Seated Rows
Bar Cable Curls
Wide Grip Pulldown
Medicine Ball Twists
Machine Rows
Ab Crunch Machine
Hanging Leg Raise
Hyperextensions

Workout #3
(Chest/Tri/Abs) Total of 7 sets each
Flat Bench Press
Dumbbell Extension
Incline Bench Press
Tricep Pushdown
Decline Bench Press
Medicine Ball Twists
Pec Flys
Ab Crunch Machine
Hanging Leg Raise

I do a warm up set prior to the set starts. I go heavy weight first 3 sets at 8-10 reps, 4&5 set i drop the weight 10 lbs or so and do 12 reps, 6&7 set i drop 10 lbs more and do 15 reps.

Whats your guys suggestions? I'd appreciate any help or any way to improve this set up. Thanks in advance.