I am trying to get fit...here is my plan your thoughts?

I am trying to lose about 50 lbs, I exercise at least 45 minutes to two hours a day...my regimen starts with elliptical for 10 to 15 minutes, stair climber for 10 minutes and then walking with jogging for the remainder of whatever time I have left before the gym closes 30 min to an hour and half...I am eating around 1200 to 1300 calories a day...so is this legit or should I add weight training? If so how often? I keep reading that weight training helps ya lose...I been all cardio thus far
I am trying to get fit...here is my plan your thoughts?
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