Constructing a superhero

So you're a genius, and you have all the dough in the world, plus lots of time on your hands. Using existing technology, could you cobble together an Iron Man suit like the one Tony Stark makes in the movie? James Kakalios, a University of Minnesota physics professor (who may or may not sport a secret identity of his own --we're really not at liberty to say), has given it some thought. We've distilled his opinions.