Take all nights. Because days and nights are going to kill your body have you sleepy and tired the whole day at work but to be for real you might just be a zombie at the end of the day you will never have a chance to sleep. But on the other hand, all nights are difficult to but once you keep the rotation and vibe going you will be a much succesful person in all nights than you"ll be days and night. That way you wil have the chance to sleep and have time to do some personal things. Your boss is going to put a tough schedule on as soon as you hit the clock so get your rest and cut out on the partying, and get ready for the next morning. All nights during work time is good so that you can follow the regulaur basis so on your days off you want be in zombie mode. My vote straight nights.!!!!!