From a cardio perspective I would recommend running stairs. Also, what worked for me, was start about a 12 min mile jog or however slow you need it to be. The longer you can stay at it the better you will eventually be able to do just try to push yourself as it becomes easier. Furthermore, this may make you look like a idiot, but if you listen to an ipod while you jog, sing along with the lyrics (to your self). I found this greatly increased my endurance, because A) I wasn't thinking about jogging, B) this forces you to breath in and out.
You mentioned dumbbells, I am not sure you mean run with them (if you don't I apologize) but i wouldn't recommend it, I have heard running with weights in your hands (vest on the other hand are good) is incredibly bad for your joints
Eve torres does this, and it's no easy workout. 'stair way to a heavenly body', google her workout video. Yeah it's a chick, but it's still a ridiculous workout.
Lots of shoulder and other joint stability exercises. LOTS OF STRETCHING! then the basic power lifts: Bench, dead lift, squat. some wrestlers I'd follow up are:
+ John Morrison for stability exercises
+ John Cena for Strength Exercises
+ Randy Orton for explosive strength
+ Kofi Kingston for sretch exercises
Even if you don't like those wrestlers, that's mostly their specialties. So google some of their routines, then incorporate some techniques into what you want to be like; the strong Khali wrestler, the bouncy Kofi, the explosive Orton, maybe the grappling Bryan.