Thats really not the true value of the gold. Your way too high. If the gold was removed and they started to sell it off, the value of gold would drop dramatically, probably by about 60 or 70 percent. Remember, the price is in part dictated by supply and demand. If supply is high, demand will be low. The real value of the gold is probably around 80 or 90 billion, or less.
Haven't you seen Italian Job? you don't sell it all off at once, that would be stupid. You move a brick or two at a time.
Hell, if it were me, I'd only move a few OUNCES at a time.