With a little bit more time during the holiday break, why not submit a session proposal to either one or both:
Agile2019 - August 5-9, 2019, Washington, DC
Cool thing about Agile2019 submission process - we have groups of reviewers at each track who are ready to help you make your ideas shine. All you need to do is write the first version of your proposal and click “Ask for Feedback” button before 1/26/2019.
And while you are at it, submit to
Big Apple Scrum Day 2019 ( May 10, 2019 in NYC):
Think about it, if your submission get’s accepted to both, you will have a chance to run your session in NYC before taking it to the big Agile in DC.