Bad idea for you are wanting to do. Get the right help. I would go to an ART professional. Preferably one that is also a chiropractor.
Not sure what else one would really need yoga for. I have a couple of dvds and only really used them a couple of times. There are much better ways to accomplish anything you might want to get from yoga.
Mobility - do specific mobility work.
Flexability - stretch. even though it doesn't seem tredy these days it makes me feel a lot better. I have a couple of stretching routines from gymnastic sites.
Cardio - do cardio
GPP - weights, kbs, strongman stuff.
Goofy chants and meditation - ok, maybe yoga for this. or tai chi.