Well, no risk no champagne. That's why I am saying don't play this game with big money. The risk is really limited. You give the exchange to hold just a little bit more than you immediatelly take back from them, so c'mon.
Roughly, you give them to hold btc worth 1200usd, and at once take 1000usd back from them and at once use it to pay the bills which you cannot avoid anyway. So you risk 200usd to avoid selling 1000usd worth of btc at the bottom. If you can't take such risks, I don't know how you go through life and even end up being a bitcoiner.