If you plan on doing cardio classes outside the home and want Cathe strength workouts only, AND if you are only interested in videotapes, I would like to suggest the Maximum Intensity Strength tape, the Power Hour tape, and / or the Push-Pull or the SuperSets tape from the Body Blast Series. I think you need to seriously bring weights back into your weekly schedule.
If you want Cathe cardio workouts as well as strength, and again if you're limited to videotapes, I'd suggest the entire Cross Train Express series; this is a 6-video series, 5 of which include a 30-35-minute cardio workout (modes vary among step, kickbox and hi/lo) as well as isolated muscle strengthening and select ab workouts, and the 6th is exclusively dedicated to leg strengthening ("Leaner Legs"). CTX would be a good start for you.
If you have a DVD player, consider the above suggestions - Maximum Intensity Strength and Power Hour are included on one DVD with Body Max as well; Push-Pull and Supersets are also on one DVD, and the CTX series is a 2-DVD system that has each workout by itself, AND upper body and all abs premixes.
A-Jock