Corrections: You are missing Latady Island (3420), Smyley Island (1685) and Farwell Island (1575). The size of Charcot Island is around 2190 sqkm, King George Island is around 1260 sqkm. Berkner and Roosevelt Island have both been found to be completely sumbmerged below sea level, they are thus not islands, but ice rises. If you want to include them, you'll have to also add the ice rises Henry, Korff, Steershead and possibly Crary.