Using a job market matching model would be more appropriate for this, seeing that each hour is associated with an convenience level (a la wages) and disutility

Using a job market matching model would be more appropriate for this, seeing that each hour is associated with an convenience level (a la wages) and disutility from crowding. However economics is about studying equilibria, not finding recipes for what to do. Just check Google Maps for crowding levels if you need to go to the supermarket, or request a queue status indicator to be put into the market's website.