Does this sound like a good workout to you?

I have 15 more pounds to lose for me to be at a healthy weight. I just got p90x I'm gonna do that for 90 days then I'm going to get Tony Horton's 10 minute workout after that to stay fit. Plus I eat really healthy and I workout on the ab circle pro. I'm scared that I'll bulk up. I want to lose the weight. Will p90 do the trick?