P90x or develop my own routine?

I'm starting college soon and I need a workout routine to get me in shape. P90x means I don't have to do any research and all I have to do is optimize the videos for my iPhone to do at the gym but i'm really over analyzing the situation.

P90x is more of a home toning program. It's better if you ask the trainer at the gym to give you a simple program at first (they usually give a simple program like: day1 chest+triceps day2 back+biceps day3 abs, legs, shoulders) and when you get more experienced and your body gets fitter you can form your own routine.
I think that's the best for you.

Chest
incline dumbbell presses: 2 warm up sets of 12 reps, 1 working set of 10 reps.
incline flyes w/dumbbells: 1 warm up set of 12, 1 working set of 10.
sit ups w/weight: 3 sets to failure.
weighted leg raises: 3 sets to failure.

shoulders
military press in front: 2 sets of 12 reps, 1 set of 10 reps.
side raises: 1 set of 12 reps, 1 set of 10 reps.
bent over rear delt raises: 1 set of 12 reps, 1 set of 10 reps.
front raises w/dumbbells: 1 set of 12 reps, 1 set of 10 reps.
shrugs: 1 set of 12 reps, 1 set of 10 reps.

back
lat pulldown: 2 sets of 12 reps, 1 set of 10 reps.
bent over barbell rows: 2 sets of 12 reps.
seated cablerow: 1 set of 12 reps, 1 set of 10 reps.
deadlifts: 1 set of 12 reps, 1 set of 10 reps.

legs
leg extension: 2 sets of 20 reps, 1 set of 20 reps.
squats: 2 sets of 12 reps, 1 set of 20 reps.
lying leg curls: 1 set of 15 reps, 1 set of 20 reps.
stiff legged deadlift: 1 set of 12 reps, 1 set of 20 reps.

There are some ideas of ways you could separate and what you could do. I've heard of many people really liking p90x. I personally have done insanity and loved it!