I was planning on attending React Rally last year, but then my talk for StrangeLoop was accepted so I went there instead. But I really appreciate all the thought you put into organizing React Rally. Your post is a great advertisement for the conference and I will try to attend if possible. It would be good to know the dates though. I could find the StrangeLoop 2017 dates, but not the ones for React Rally 2017.
In any case, keep up the good work!