How many preferences are on the housing app?

I have a roommate chosen and we are planning to coordinate our preferences for the housing app. How many dorm preferences do we need to plan to list? That is just first and second choice, or more? Any other preferences, non-smoking, etc?

You can get most of your answers here-:
http://talk.collegeconfidential.com/university-washington/1752473-prospective-students-ask-questions-here-p1.html

I’m a current student at UW helping prospective freshmen!