Hi Reba,
It sounds like you have a good basic knowledge of stepping, and that's a great start to tackling Cathe's stuff. Cathe's choreography is trickier than the tapes you listed, but because of that, you won't get bored quickly! (You'll never get bored, actually!) The easiest choreography of the tapes of Cathe's that I have is How to Get in Shape for your wedding. I also don't think the choreography in BodyMax, IntervalMax or PowerMax would trip you up much, and I enjoy these tapes much more that How to Get in Shape... However, the intensity of all of Cathe's stuff is much higher than the tapes you listed, because the speed is a bit faster, and there are a lot of jumps and leaps. JUST TAKE THE JUMPS AND LEAPS OUT!!!! You will be able to handle these videos by modifying. If you think a certain move may stress/twist your ankle, substitute a basic step or other easy move that you are comfortable with.
As for your original question, I have never done this tape and think it may be pretty dated--consider that if it might bother you!
Wendy