I'm in the minority, but I find Cardio Kicks too fast for rookie kickboxers. Which is usually me since I go months between kickboxing. Yes, you can modify, but I always question whether everyone knows how to modify. One has to be extra careful on carpet or your knees are going to be sore & it is a space hog.
I found that if I do a couple of rounds with Kathy Smith's kickboxing tape (Keith Cook is a great co-leader), that I do much better with Cardio Kicks. I absolutely love the Cardio Kicks drills which are at the end of the workout. Save some energy for those.
Sweat factor? You'll be dripping after the warm-up!
Debra