Unscheduled Events?

I’m trying to figure out if our current web site can be redone as a wordpress site.

A big hurdle to switching is our training calendar. If we have, say, 200 different courses in 5 categories, can each of those exist as an Event in one of the Event Calendar plug-ins, whether or not they are currently scheduled? Ideally that would be the case, then each month when the schedule is set, the classes can be included in a training calendar that can be viewed/sorted by date OR by one of the 5 categories. Events would then drop off the calendar after they occur. The training calendar would then be visible on the home page as a column or widget.

http://wordpress.org/extend/plugins/events-manager/