I don't have any plan to sell them at a moment as I am very much sure that bitcoin will reach to the price of $1500 very soon and once it achieves that price I will start selling my coins as that would be the best price to sell bitcoins.
It depends on the exchange. At this point the only exchange that might go through a serious price increase is Bitfinex due to all the withdrawal problems they are experiencing. Main point is that if the price at Bitfinex happens to reach such prices, that it won't have any value as it isn't the result of legit demand. Just wait for it -- if things go somewhat back to normal, the price will come down like 10% directly.