My friends and I are visiting the Schengen area, specifically Italy (1.5 days, 2 nights), France (3 days, 3 nights) and Belgium (3.5 days, 3 nights), in that order.
Assuming that the duration of the longest stay is counted in nights, it would be either France or Belgium, is there any way to specify Belgium as my "main" destination? Or since we're going to France first, should we apply for a visa at the French consulate?