I think you might be better off with a lossy copy, actually! We could lengthen your telomeres - come to think of it, how attached are you to that DNA? We might as well patch up your genes on the way. In fact, should just build you a stronger skeleton and musculature from first principles, rather than xeroxing the one in your current body. As long as we get the gross neuron structures of your brain - and your encoded memories (which might simply be stored as binary code in some proteins as described in http://www.sciencedaily.com/releases/2012/03/120309103701.ht... ), then I say that you're as "you" as two copies of firefox are "the same program".