Chances of acceptance for proceedings?
If you have the time and means to do so and you are interested in this opportunity, I would suggest doing it; it does not hurt and as someone who used to work in Higher Education, it was not out of the ordinary for scholars from other fields to contribute to conference proceedings (just as you presented at this conference) because Education as a discipline is inherently understood as multidisciplinary in scope. None of us can necessarily give you your chances without assessing the strength and merit of each person who would also be submitting. The positive news is that if you write something that you feel good about, if it is not accepted, provided there are no limitations imposed by the organization that hosted the conference, you still nonetheless have a publishable work in your pocket that can ostensibly be sent to journals for publication.