Todays Gym Plan

Tonight after dinner I'm going to the gym and here's what I will be doing.
This feels like a nice balance of cardio and weights and can be altered while there to get even more out of my workout.

Warm up:

Treadmill - Increase speed up to 6 over 4 minutes hold for 2 mins, increase speed to 8 for 1.5 mins, decrease to 6.5 for 2 mins, increase to 9.5 for 1.5 mins, decrease 6.5 for 1 minute cool down 1 minute = Total 13 minutes

Main exercise:

Bike - 7 minutes resistance 5 with two 30 second sprints in the middle
Shoulder Press - 2 sets, 10 reps 5kg (I'm a little weak when it comes to this exercise) then try 10 reps, 7.5kg
Squats with Ball - 4 sets of 10
Front Row (seated cable machine) - 3 sets, 15 reps, 25kg; 1 set, 15 reps, 30 kg
Chest Press - 3 sets, 15 reps, 25kg
Reclining Bike - 10 minutes, interval training
Row Machine - 1000 meters
Leg Extension - 3 sets, 10 reps, 30 kg
Cable Tricep Extension and Bicep Curl - 3 sets, 10 reps, 15kg
Leg Press - 3 sets, 20 reps, 50kg

Cool Down:

Cross Trainer - 12 minutes, resistance 4
Stretches - Arms, back, legs hold each for 20-30 seconds

Go home feeling happy that you got off your backside XD
How would you improve tonights workout? Whats you favourite workout plan?