We can't tell if they will cut the first part at Minako's part or not. They may adjust the chronological order a little, so it may follow this order: Usagi holding Mamoru in his room after Makoto's story, Inners chatting with each others, Minako worrying about not being able to transform, her friends talking about Haruka, Michiru and Setsuna. After that, we can see the car of Haruka and the "to be continued" card appears. Minako's story will be moved to part 2 to balance the 2 movies, because the final battle can happen with a faster pace.