Based on D4, promotion, and 7500/850/160/5 I would recommend
Bleachers: 10-11
Lower Tier: 36-38
Courtside: 120-125
Luxury: 1200
Here is the tool I used to get those numbers:
http://bb-usa.net/attendance/attendance.php
I don't know if you need anything besides an access code to use it. Look at the sticky about 3rd party programs to learn more about access codes. It can be changed here: http://www.buzzerbeater.com/prefs/profile.aspx
Hope this helps!