Hi:
I agree with Annette. THis sounds like you are breathless and rushed. You want to do it all, and do it all in one week. But it's a struggle to fit all that in in one week and still enjoy life!
Why don't you set up a schedule on a two-weekly rather than one-weekly basis? You may feel better with this longer schedule as you will be able to see that over a two week period, you can fit everything in.
It is good to cross train and try different cardio options. 5/6 cardio sessions are not necessarily any more beneficial than 3/4 cardio sessions, however. Try to remember that in fact, less can be more. More can be just....well, more stress, on the mind (as you try to schedule it all in) and on the body (needs more rest!!!) You should aim to train smarter, not longer and more frequently, i.e. include a steady state cardio day (your choice as to what form this takes, an intervals day (again, this could be on the elliptical, treadmil, running fartlek, or step) and a circuit training day (Cathe's Circuit Max, Boot Camp, or Step Jumo and Pump would lend themselves tothis excellently well). More than this your body doesn't need, especially if you are also training your legs twice per week also. They will give out on you or sickness/injury will strike if you insist on 6 gruelling cardio sessions and 2 weight training sessions for the legs. If you still feel the need for a cardio boost on the same day as you train legs intensely with weights, then please make it a low impact workout like Kick, Punch Crunch, a wak, or a short run (no more than 30 minutes) or a workout like the cardio sections from Cathe's CTX set. That will then warm up the muscles for training them, rather than exhaust you repeatedly.
Remember that the whole point about exercise is to release energy for the rest of your daily activities, not leave yourself flat out exhausted every week thinking, "I must do more!"
And if I have totally mis-interpreted you, then I apologize.
Good luck
Clare