One thing that wasn't mentioned yet. You need to be REAL careful when you start going 2 hrs 5 days a week. With poor cardio and having not trained in a while, you're much more suceptible to an injury. I admire what you're doing and I'd hate to see your shot derailed because you got hurt. keep us posted and good luck!
“A black belt only covers two inches of your ass. You have to cover the rest.” - Royce Gracie