Why bother? If the caps melt, the weight of the water will be spread over the whole ocean (9/10ths of the earth’s surface) instead of the caps. The caps will rebound from the weight removal while the cean floor will be more compressed from the weight addition. End result; no change in the height of the oceans.
PS: The glacial areas are STILL rebounding upwards after the loss of the weight of the last glacier that covered the area.
Great info! I never thought about this aspect before.