Hi there, Brian! Thanks for getting in touch. 🙂
Yes, you will still be able to post your own events on either the front or back end of the site with all the plugins installed. You have the choice to post events via the Community Events form on the front end or the post editor on the back end, but your visitors will only be able to post via the Community Events form on the front end. Either way, all events will go to the same calendar.
Does this help answer your question? Please let me know.
Cheers!
Geoff