Hopefully they will be okay. Just make sure to get their crumbles first thing in the morning. You can sprinkle some on the paper towel around their dish too, they like to scratch. I kept a washcloth or pillow case under the light to give the babies a place to gather that they seemed to enjoy for the first week or so. The pillow case is easier to get the gunk off and the chips don't stick as easy.
If they are gently cheeping, they are happy. If they are loud, there is something wrong. Keep them warm and free from drafts and give them a place to escape in the box if they are too hot. Be very careful with water too, if they get wet they might get cold and die, be sure to put the rocks or marbles in to prevent drowning. The chicks even fall asleep while drinking and can drown so the rocks are important.
Other than that you should be all set for the evening. Glad they are eating for you. Be sure to give grit to them if you feed anything else other than the egg or crumbles. I put a box of sand in with my older chicks and put their treats like bananna or strawberries in the sand to make sure they get grit. I had one die a few weeks ago and I think it ate some wood chips when I put treats in and they stuck to the chips, now I make sure I coat in sand so that it can't stick.
Thats about the extent of my knowledge!
Anne