If you are not fast then you will lose some oppurtunity on that price difference and also take proper precaution since conformation have little delays by these days maybe you will caught up if you hit by badluck.
But anyways for that goodluck for arbitrage trading mate.
Arbitrage trading is only effective with bots anyways. Theres too many scripts running arbitrage in bitcoin its ridiculous. You have to watch prices on different exchanges 24-7 if you want to even have a chance against bots.