Is It Bad to Be Right Before Lunch?

Don't worry about getting a good or bad interview slot. If possible, try to pick a time when you know you'll be at your best. Don't over prepare and don't memorize responses. You will have enough time to prepare between the day you get an invitation and the day of the actual interview. The second issue that comes from preparing for so long is that if the interviewer asks you something different than what you've been prepared for again, you're more likely to be thrown off guard.