Modifying P90 with other workouts

jtrain252

So im halfway through power 90 and I am a pusher..... I was wondering since im 285lbs and my goal at the moment is weight loss, could i modify Power 90s sched. Instead of doing Sculpt 3-4 and Sweat 3-4 would this benefit me more.
Monday Sculpt 3-4
Tuesday Fat burn Express
Wed Sweat 5-6
Thursday Sculpt 3-4
Friday Sweat 3-4
Saturday Fat burn Express
Sunday Rest

It would give me more cardio in a sense burning more calories. Dont get me wrong I have definately noticed increased strength and muscle tone and have lost weight, however Im not losing weight fast enough and id rather do more cardio drop the weight on the first round of P90 then do master series fully, then move on to P90x 90 days and gain the toning. What do you guys think. should i just alternate back and forth or modify....If im not going to modify i will definately switch on my cardio days between fatburn and sweat because it gets a little boring.