Sorry for the confusion here, Amanda! I have refunded your order of Events Calendar Pro in full—you should see those funds back in your account in no more than a few business days.
As for the set of plugins you do need, then based on your description of your needs, you’ll need each of the following products:
• The Events Calendar (Free)
• Event Aggregator (Premium)
• Community Events (Premium)
• Filter Bar (Premium)
You do not Events Calendar Pro for any of these plugins—you would only need Events Calendar Pro if you want Pro-specific features like recurring events, or the Map View, or the [tribe_events] shortcode, etc.
Please let me know if this helps at all! 😀
— George