The Classic rotation or doubles are well balanced, while the "lean" rotation has you omitting one body part per week in resistance work. I get the feeling that the Classic rotation was really well-planned and thought out, but the lean rotation was just kind of tossed together.
I recommend starting with the Classic rotation, as is, for two weeks and see how your body responds. Though you may be tempted to add more cardio, I advise against it during this two-week "break-in" period. You'll find that the rotation is very intense as is, though some of the individual parts (like Kenpo) don't necessarily seem that iintense. I needed extra sleep for the first two weeks, and often felt so tired out before bedtime that I didn't think I'd be able to do the next workout the following day. I even added in an extra rest/stretch day from time to time--about once a week, for the first 3 weeks.