Thank you very much for taking the time out to respond.
Ok, I understand. We will most likely try to make this work for now. If a vulnerability is found in the plugin later on, or if WordPress core no longer matches up I will take another look. The most sensitive information we’re collecting are the organizer’s phone number and email address, and we have SSL, so I’m not terribly worried at the moment.
I’ve done some plugin development of my own, so that’s about what I expected! Thanks again for the help.