I'm certainly no expert, but it appears that is Easter week, so I think you will have more crowds. Don't know what kind of holidays Europeans get for Easter. But I've heard that Tuesdays are the least crowded, followed by Thursdays. It seems that French kids go to school Mon, Tues, Thurs, Fri and half day every other week (or something like that). So you might want to avoid Wednesdays.