So . . . help me with my "Express" rotation

[Gardengirl]

I really need to put together some kind of rotation for my 20 minute workouts. I was looking at the Firm Express workouts and while I'm interested in a couple of them, I don't think I'd want the entire set (especially for $130.00), which got me thinking that I probably have enough workouts that would work. I like the idea of mixing up the cardio/sculpt/cardio sculpt and them being 20 minutes though!

See if I've got this right . . . the Express rotation consists of 20 minutes each of sculpt, cardio and cardio/sculpt workouts. (I guess the catch with the firm workouts is the "mini bursts".) But did I see that they actually want you to do 4 at a time? If that's the case, I'm back at an hour . . . and I don't have an hour right now!!!!!

If I didn't want to do 4 per day, how would you put a rotation together for cardio/sculpt/cardio sculpt? And is 20 minutes a day enough? I can work out longer on the weekends, but struggling time-wise during the week.

TIA!!