1) offspring are infrequently born with an extra chromosome. Extra chromosome == "more DNA" than parent.
But that's not even a relevant or appropriate concern for your goal. It's not "more organs == more human!" or "biggest DNA is best DNA". For example, some plants have nearly 50x the genome size as humans, this fish has a genome 40x the size of the human, and this bacteria you can't even see has a genome 209x the size of humans. There's surely "more information" there, but it's all in how the code interprets it.
2) information entropy is not thermodynamic entropy. See:
"You underestimate the character of man." | "So be off now, and set about it." | Up for a game?