I was just thinking that may be the limitation, scheduling.
You can abuse CUNY's tipps system to get a good cross reference of courses and schedules. Its for finding course equivalencies, but basically if you find a course at one college that fits what you're looking for you can get a cross-section of similar courses at all of the colleges and then check the schedule in the same site. Of course the 'equivalency' of the courses is sometimes quite dubious, it's a good resource as long as you read the course descriptions of the 'equivalent' course to make sure it actually is.
1. Go to
http://student.cuny.edu/cgi-bin/CourseGuide/Colleges.pl
2. Choose a From college, or find a course at a college first that fits, and use that as a base.
3. Select the 'To' colleges you could see yourself actually going to logistically
4. Choose the clas you were eyeing up at the 'home college', you can select multiple (CCNY is good for a Math reference, or Hunter which also has a stats department).
5. Open new tab on 'equivalent' course description links, as well as your original course link, and there is a check availability link on every description to get full schedules.
Hope this helps.