When Olivia and Lucy are looking in the broom cupboard closet at Rory's growth chart, they discuss how tall she was at age seven. Lorelai and Rory didn't move into that house until Rory was 11 years old.
When Lorelai and Chris wake up, she says it's 4am, but hours later, when they're waiting to get into the restaurant she says "if they weren't open at 11 I don't think they're gonna be open at 5 in the morning."
Rory steps down, supposedly due to some Yale Daily News bylaw. At most, she has been editor of the paper for two semesters, although it is likely far less. When Doyle was editor, he was in charge for two consecutive years.