Well, for one thing Devine, don’t restrict yourself to egg whites. Please, please please, do eat the yolks too. And, no, they won’t cause you to get any fatter nor will it cause your ‘cholesterol numbers’ to go up.
What will go up is your strength. You could add an orange (not orange juice) to your breakfast. All put together, should make a WONDERFUL breakfast, that will keep you satiated (satisfied) quite well.