overweight/flat feet, is learning to box a viable way to get into shape while learning? I'm 26, 6'4'', 350 lbs, with flat feet, bad big toes, and uneven legs.  Would getting into a boxing routine/regimen help or hurt me?  I've always wanted to get into boxing but just have never pulled trigger, so to speak.  I'm to the point where I'm going to start boxing, powerlifting, or shooting ball to get some exercise, coupled with a reduction/change in eating habits.  

Any help/advice/perspective would be greatly appreciated!